Blackcap birds (Sylvia atricapilla) migrate out of Germany before wintertime. Prior to the 1960s, all members of a particular blackcap population flew to Spain, which had an abundant natural food source. Now, some members of the same blackcap population fly to the United Kingdom, where food placed in feeders by humans is abundant. The blackcaps return to the same forests in Germany to nest during the breeding season.
Some blackcaps that migrate to the United Kingdom have become distinguishable by certain physical and behavioral traits from blackcaps that migrate to Spain. Which of the following best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter?
A- The blackcaps that migrate to Spain will selectively mate with the blackcaps that migrate to the United Kingdom, resulting in increased genetic variation in the blackcap population.
B- The blackcaps that migrate to the United Kingdom will become reproductively isolated from the blackcaps that migrate to Spain, resulting in speciation in the blackcap population.
C- The blackcaps in Spain and the United Kingdom will migrate to other geographical locations in search of potential mating partners, resulting in a smaller blackcap population in Germany.
D- The blackcaps will begin nesting at their wintering sites in Spain or the United Kingdom, resulting in a larger blackcap population migrating back to Germany after the breeding season has ended.
Answers
Answer:
D- The blackcaps will begin nesting at their wintering sites in Spain or the United Kingdom, resulting in a larger blackcap population migrating back to Germany after the breeding season has ended.
Explanation:
By the inhabitants of Spain and the United Kingdom placing feeders out for the blackcaps, the birds in their nesting sites during the winter will have food to eat, meaning a bigger population of the Blackcaps when they return to their main home in Germany.
This best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter.
Related Questions
A compact cluster of spore-bearing structures in
some seedless vascular plant sporophytes.
Answers
Answer:
B :)
Explanation:
What does a recombination frequency of 50% indicate regarding linkage?
Answers
Answer:
Explanation:
A recombinant frequency significantly less than 50 percent shows that the genes are linked. A recombinant frequency of 50 percent generally means that the genes are unlinked on separate chromosomes. The remainder of this chapter focuses mainly on linked genes and recombinants arising from crossing-over.
Answer:
A recombinant frequency significantly less than 50 per cent shows that the genes are linked.
Explanation:
A recombinant frequency of 50 per cent generally means that the genes are unlinked on separate chromosomes.
A female fish may lay thousands of eggs at once. Which additional statement about fish is most useful for explaining how fish species can evolve by natural selection?
A. All of the fish eggs are genetically identical with one another and with the female parent fish.
B. The environment cannot support unlimited growth of the fish population, so only some fish eggs will mature to adults.
C. After the female fish lays a clutch of eggs, neither parent tends to or cares for the eggs or offspring.
D. Fish eggs will develop into embryos only if they are fertilized by sperm from the male fish.
Answers
Answer:
D
Explanation:
A can't be the answer since there is something called mutation which means even twins can't be 100% the same
B can't be since it has nothing to do with natural selection
C can't be sine as B, it has nothing to do with natural selection
A female fish may lay thousands of eggs at once. The additional statement about the fish which is most useful for explaining that the fish species can evolve by natural selection is that the fish eggs will develop into embryos only if they are fertilized by the sperm from the male fish. Thus, the correct option is D.
What is Natural selection?Natural selection can be defined as the differential survival and reproduction of the individual species due to the differences in phenotype of the organism. Natural selection is a key mechanism of evolution, the change in the heritable traits or characteristics of a population which take place over the period of several generations.
A female fish may lay thousands of eggs at once. The additional statement about the fish which is the most useful statement for explaining that the fish species can evolve through natural selection is that the fish eggs will develop into embryos only if they are fertilized by the sperm from the male fish.
Therefore, the correct option is D.
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What is a trace fossil?
*USE YOUR OWN ANSWER*
Answers
Answer:
Its basically traces of an animal and not the actual animal. For example footprints.
Explanation:
A population of deer lives in Canada. Over 50 years, the size of the deer
population decreased. What best explains the decrease in the size of the deer
population?
Answers
Answer:hunting
Explanation: They can lose population .
Fewer deer were born than died best explains the decrease in the size of the deer population.
What is population?In particular geographical area, when group organism of same particular species inhibit, and they are capable of interbreeding, refers to as population.
This field is important in conservation biology, especially in the development of population survival analyzes that let us predict the long-term likeliness of species remaining in particular habitat parts. Population ecology Although it is a branch of biology, it presents interesting problems for mathematicians and statisticians studying population dynamics.
So, when population size of deer decreased over 50 years, we can say that deer populations are declining due to death, animals leaving the area or dispersal (migration).
Population change = (births + immigration) - (deaths + immigration).
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Plants, like all organisms, adapt to the conditions of their environment. Some special challenges a plant may face are drought, flooding, and a salty environment. Your task is to identify and describe ways that plants adapt to these challenging conditions in their environment. Select one plant adaptation to drought, one adaptation to flooding, and one for salt tolerance. Explain how each adaptation enhances plant survival. Identify a scholarly source of information for each
Answers
Answer:
Hydrophytes is flood tolerant plants, barley is salt tolerant crop and sorghum is a drought tolerant crop.
Explanation:
Hydrophytes also known as flood tolerant plants that have adaptations to survive flood problems. The plant has the development of air spaces in the roots and stems which allow diffusion of oxygen from the aerial portions of the plant into the roots. Barley shows a greater degree of salt tolerance by applying method of osmoregulation which helps the plant to tolerate salt stress. Sorghum is a plant that is adapted to drought condition. These plants have less number of stomata and waxy layers on the leaves which lowers the rate of evaporation or transpiration.
Answer:
C,B
Explanation:
9. Which nucleus has role in conjugation in Paramecium
a) Mega nucleus
b) Micronucleus
c) Macronucleus
d) Cellular nucleus
Answers
( b ) Micronucleus has role in conjugation in paramecium.
The organism's germ line genetic material is kept in the micronucleus. It is in charge of the genetic rearrangement that takes place during conjugation and generates the macronucleus (cross-fertilization). Thus option B is correct.
What Micronucleus role in conjugation in Paramecium?The pairing and subsequent fusion of two paramecia is a process known as conjugation. It is known as a cytoplasmic bridge where they converge. After meiosis, the diploid micronucleus divides into four new micronuclei. The micronuclei of the cell, all except one, break down.
This method doesn't include meiosis or nuclear fusion. It manifests in a single person in the manner described below: Macronucleus deteriorates and vanishes. Eight nuclei are produced after the two micronuclei divide twice through mitosis.
Therefore, Micronucleus has a role in conjugation in Paramecium.
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Define the following terms:
1. Shadow
2. Pinhole camera
3. Screen
Answers
Answer:
shadow
Explanation:
a dark area or shape produced by a body coming between rays of light and a surface
What is biomass burned to produce
Answers
Answer:
Burning either fossil fuels or biomass releases carbon dioxide (CO2), a greenhouse gas. However, the plants that are the source of biomass for energy capture almost the same amount of CO2 through photosynthesis while growing as is released when biomass is burned, which can make biomass a carbon-neutral energy source.
n rabbits, coat color is affected by a series of alleles with a hierarchy of dominance such that C >Cch>Ch>C. Each allele is dominant over all the alleles listed to its right. C codes for full color, Cch codes for chinchilla, Ch codes for himalayan (white with black extremities) and C codes for albino. A chinchilla rabbit is mated to a himalayan rabbit. Each of these rabbits had one albino parent. What are the phenotypes of the offspring and in what frequencies will they be produced
Answers
Part A
For each method,a function to model the expected number of plants for each year
Part B
Use the Functions to Find the expected number of plants in 10 years for each method.
Part C
How does the of plants in five years compare to the expected number of plants in 15 years !Explain how these patterns could affect the method the gardener decides to use.
During follicular phase which hormones have highly secreted in mentrual cycle
Answers
Answer: The follicular phase of the menstrual cycle is defined as the first day of menstruation until ovulation. It is initiated by a rise in follicle-stimulating hormone (FSH) levels at the first day of the cycle. This is triggered by a decrease in progesterone and estrogen (which act to inhibit FSH secretion).
Explanation: hope this helps
Proteins on the surface of vesicles determine where the vesicles go. Which cell organelle provides the instructions for these proteins?
OA. endoplasmic reticulum
OB. lysosome
Ос. mitochondria
OD
nucleus
Answers
Answer:
D. Nucleus.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.
Proteins on the surface of vesicles determine where the vesicles go.
The nucleus is the cell organelle which provides the instructions for these proteins. It controls all the activities taking place in the cell and the synthesis of proteins.
explain how important is the role of the parents during the earlier stage of development?
Answers
May someone help with this match each one pls
Answers
Describe how hibernation has helped bear species to survive.
write your answer in form of a claim, evidence, and reasoning statement.
1.Make a claim to answer the question(restate your question).
2.Give evidence to support your claim(my evidence is).
3.Use reasoning to explain how your evidence supports you claim(this shows).
ty please no scams brainliest also to the first person who answers and at least 5 sentence answer ty.
Answers
During hibernation, the animal’s body temperature, heart rate and breathing rate all drop to significantly lower levels. Animals do this to survive the winter because the weather is cold and food is scarce. It is advantageous because these animals can quite literally shut themselves off for weeks at a time rather than try and survive through harsh weather conditions.
While many people think bears are hibernators, they actually participate in a similar, though not exact, practice. Instead of hibernating, bears fall into a deep sleep called torpor. During torpor, heart rate and breathing rate decreases, body temperature reduces slightly and bears do not eat or release bodily waste. Bears can sleep more than 100 days without eating, drinking, or passing waste!
Bears sleep in dens that they make themselves, as well as in hollow trees, caves and dens built by other bears. A den can be built in 3–7 days, however, the timing of den building varies from bear to bear. While some bears build their dens months before hibernation season, others choose to excavate their dens.
These animals can dramatically drop their body temperature to below freezing—salty body fluids work to prevent tissue crystallization in particularly cold temperatures.
So really, animals that are true hibernators don’t actually sleep through the entire winter.
The urea produced by their fat metabolism is broken down and the nitrogen is re-used by the bear to rebuild protein.
Answer:
Hibernation helps animals survive the changing seasons. Foods that bears eat, such as berries and flowers, are much less available during cold winter months. When they hibernate, bears enter a deep sleep. ... While they sleep, the bears can survive because their bodies live off of their stored fat or food.
During hibernation, the animal’s body temperature, heart rate and breathing rate all drop to significantly lower levels. Animals do this to survive the winter because the weather is cold and food is scarce. It is advantageous because these animals can quite literally shut themselves off for weeks at a time rather than try and survive through harsh weather conditions.
While many people think bears are hibernators, they actually participate in a similar, though not exact, practice. Instead of hibernating, bears fall into a deep sleep called torpor. During torpor, heart rate and breathing rate decreases, body temperature reduces slightly and bears do not eat or release bodily waste. Bears can sleep more than 100 days without eating, drinking, or passing waste!
Bears sleep in dens that they make themselves, as well as in hollow trees, caves and dens built by other bears. A den can be built in 3–7 days, however, the timing of den building varies from bear to bear. While some bears build their dens months before hibernation season, others choose to excavate their dens.
These animals can dramatically drop their body temperature to below freezing—salty body fluids work to prevent tissue crystallization in particularly cold temperatures.
So really, animals that are true hibernators don’t actually sleep through the entire winter.
The urea produced by their fat metabolism is broken down and the nitrogen is re-used by the bear to rebuild protein.
Explanation:
Dominique is a chemist and has just discovered a new drug that interferes with the Calvin Cycle of photosynthesis. They believe this drug is going to be awesome because it will allow the light reactions to run forever, while just stalling out the Calvin cycle. Terry disagrees, saying that any drug that stalls Calvin will ultimately inhibit the light reactions, too. Who is correct and why
Answers
Answer:
Terry is right.
Explanation:
Any drug that stalls Calvin will ultimately inhibit the light reactions because the Calvin cycle and light reactions are interconnected. The light reactions provide CO2 to the Calvin cycle while on the other hand, the Calvin cycle provides sugars to light reaction in order to produce ATP molecules from it so if Calvin cycle stops no sugar is provided to the light reaction for generating ATP molecules.
Interferons play a vital role in the immune system. Why are interferons so important?
Interferons can interfere with viral replication
Interferons can inhibit cell division
All the answers above are correct
Interferons can combat bacterial and parasitic infections
Answers
Answer: all the answers above are correct
Explanation:
How would this diagram be
different if it showed anaphase I of meiosis instead of anaphase of mitosis?
A Each chromosome would still have two chromatids.
B The chromosomes would look the same as in mitosis.
C You would be able to see DNA in the chromosomes during meiosis.
D Homologous chromosomes would be moving to the same end of the cell
Answers
Answer:
This question is incomplete as there is no diagram, however, the question can still be answered without it. the answer is as follows:
A. Each chromosome would still have two chromatids.
Explanation:
The ANAPHASE stage of both mitotic and meiotic division is the stage where chromosomes are pulled apart into opposite poles of the cell. However, meiosis occurs in a two-step division tagged meiosis I and meiosis II.
In mitosis, sister chromatids of a chromosome are separated during anaphase, but in meiosis I, homologous chromosomes are pulled apart during anaphase I. This means that in the anaphase I of meiosis as opposed to anaphase of mitosis, each separated chromosome WOULD STILL HAVE TWO CHROMATIDS.
An Autotroph get energy from the sun, not from food.
Tue
False
Answers
Answer:
True
Explanation:
Which best describes the development of penicillin?
A.It was originally discovered as a product produced by plants
B.It was originally discovered from mold growing on petri dishes.
C.It was originally discovered to be ineffective
D. It was originally discovered to treat viral conditions.
Answers
Answer:
There is a hack in forms that forms gives u the answer hold ctrl + u, and scrool to the bottom he read the part with the question and there will be an answer.
Mark as brainliest if im right good luck!!
If this question is a Form if not sorry for waisting your question!!
Answer:
The answer is B. Penicillin is made up of fungi and bacteria and was the first antibiotic.
Discuss in detail to process in which plants produce and use energy
Answers
Explanation:
Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.
What needs to happen in order for two populations to be isolated?
Answers
Answer:
Isolation means that organisms of the same species are separated, and happens when there is something between the organisms that they can't cross.
Explanation:
Organisms become isolated as a result of environmental change. The cause of isolation can be gradual, like when mountains or deserts form, or continents split apart.
Which of the following correctly describes a nucleus?
All cells have a nucleus
The nucleus is where mitosis occurs
The nucleus gives the cell energy
The nucleus is where plants make their own food
Answers
The nucleus is where mitosis occurs.
Answer: B. The nucleus is where mitosis occurs
Explanation: B. The nucleus is where mitosis occurs
the core technique of modern biotechnology is/are
1)chemical engineering
2)genetic engineering
3)both
4)none
Answers
Answer:
I'm just guessing it ok I not sure
3)Both
Explanation:
Which organization would not have to abide by OSHA guidelines?
a. nuclear plant
b. religious-based corporation
c. family run business with only local employees
d. all organizations must abide by OSHA guidelines
Correct ans: Nuclear plant :)
Answers
Answer:
b. religious-based corporation
Through what process do eukaryotes reproduce asexually?
Answers
Answer:
It is the characteristic feature of eukaryotic cell that it reproduces sexually. But, it can also reproduce asexually. Asexual reproduction is often referred to as cell division and it occurs through mitosis. On the other hand, sexual reproduction occurs through meiosis.
Explanation:
pls tell me if im wrong ill change it
Answer:
Eukaryotes grow and reproduce through a process called mitosis. Some eukaryotic organisms also reproduce asexually through processes such as budding, regeneration, and parthenogenesis.
Explanation:
an organisms habitat must provide all of the following except
Answers
Answer: Predators (trust me)
Answer:
except what? there are no possible answer
Explanation: Please give possible answers
What are the side effects of the flu vaccine shot
Answers
Answer:
Flu vaccine side effects are generally mild and go away on their own within a few days. Some side effects that may occur from a flu shot include soreness, redness, and/or swelling where the shot was given, headache (low grade), fever, nausea, muscle aches, and fatigue. But this overall depends on the person who takes it. Not everyone experiences these symptoms
Explanation:
Hope this helps!
Check all of the following mechanisms by which early colonizers may positively impact the occurrence of other species through succession. Check All That Apply Early colonizing trees that establish a new habitat may block the sun, inhibiting smaller weeds from colonizing the habitat.Early colonizing trees that establish a new habitat may block the sun, inhibiting smaller weeds from colonizing the habitat. Colonization by plants may provide habitat, facilitating colonization of animal species.Colonization by plants may provide habitat, facilitating colonization of animal species. Early colonizing plants may increase the nutrient level of the soil, facilitating the colonization of other plant species.Early colonizing plants may increase the nutrient level of the soil, facilitating the colonization of other plant species. Animal colonizers may increase pollination of some plant species, facilitating their colonization.Animal colonizers may increase pollination of some plant species, facilitating their colonization. Plant species may alter the chemical composition of the soil, inhibiting other plant species.Plant species may alter the chemical composition of the soil, inhibiting other plant species.
Answers
Answer:
Colonization by plants may provide habitat, facilitating colonization of animal species.
Early colonizing plants may increase the nutrient level of the soil, facilitating the colonization of other plant species.
Animal colonizers may increase pollination of some plant species, facilitating their colonization.
Explanation:
The plants provides habitat as well as food to organisms that helps in the colonization of that organisms because every organism needs food and living place for its survival. Some plants increase the nutrient level in the soil through fixation of nitrogen which leads to the colonization of other plant species in that environment. Some animals causes pollination of plants which helps them in their colonization so all these organisms have a positive impact on the occurrence of other species.
ASAP HELP CER
What you know about DNA and protein CER.
- has to explain the structure and function of DNA and proteins.
Answers
Explanation:
DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes. These chromosomes are made up of thousands of shorter segments of DNA, called genes.