A population of Blue Jays originally lays between 1 and 10 eggs at a time. As the environment changes, more predators arrive, and eat the eggs. Mothers with only a few eggs lose all of them and do not reproduce successfully. At the same time, there is a scarcity of worms, and mothers that lay 10 eggs cannot feed all of them. After a few generations the majority of Blue Jays lays 4-6 eggs only. What type of selection has occurred?
A. Disruptive selection
B. Directional selection .
C. Artificial selection
D. Stabilizing selection

Answers

Answer 1

Answer:

D. Stabilizing selection

Explanation:

Stabilizing selection helps to prevent extreme trait characteristics and focuses on the non extreme ones to ensure that such traits are prevalent.

Due to the fact that there isn’t enough food for a large number of the offspring and also the risk of losing all the eggs to those who had a small amount of eggs, stability was achieved after some generations that ensures that there was a balance in ensuring the eggs weren’t too few and too many.


Related Questions

A study where you try to observe subjects in a natural environment is a(n):
A. hypothetical study.
B. performance study.
C. observational study.
D. experiment.

Answers

C. Observational study
C. Observational study

1-5 fill in the blanks

Answers

1. Muscular tissue
2. Anatomical terminology
3. cartilage
4. pleura ( visceral pleura & parietal pleura)
5. four overlapping processes; maintenance of homoeostasis, an inflammatory response, a proliferative phase, and remodeling

Not too sure about 2 and 5 but here ya go

Answer:

1 nervous tissue

2 stomach

3 cartilage

4 pleura membrane

5 granulation process

Explanation:

u can google the terms that I provided

when two true breeding pea plants that show contrasting traits are crossed 1) mention the pod shape in F1 generation 2)work out the cross upto F2 generation 3) compute the relative fraction of various genotypes in the F2 generation

Answers

Answer:

1.) Inflated pod shapes (Cc) in the F1 generation

2) See attached image for the work out of the cross from P generation to F2 generation.

3). CC- 1/4, Cc- 1/2, cc- 1/4

Explanation:

This question is related to the pod shape trait encoded by a single gene in pea plants. The alleles for inflated pod shape (C) is dominant over the allele for constricted pod shape (c). This means that allele "C" will be expressed over allele "c" in a heterozygous state.

The two truebreeding parent plants will have genotypes: CC (inflated pod shape) and cc (constricted pod shape). When these two plants are crossed, an all heterozygous plant with genotype: Cc will be formed in the F1 generation. Since, C is dominant over c, the F1 Cc plants will have an inflated pod shape phenotype.

The F1 Cc plants are self-crossed to produce the F2 generation offsprings i.e. Cc × Cc. The gametes C and c will be produced by each F1 parent, which will be used to draw a punnet square (see attached image). From the cross, offsprings with genotypes: CC, Cc and cc are produced in the F2 generation.

CC (phenotypically inflated pod shape)- 1/4

Cc (phenotypically inflated pod shape)- 1/2 or 2/4

cc (phenotypically constricted pod shape)- 1/4

Small molecules are combined to form larger ones which can eventually form a

Answers

Answer:

POLYMER

Explanation:

Small molecules called monomers combine together in a process called polymerization to form a larger molecule called POLYMER. A polymer is a large molecule consisting of long chains of small molecules (monomers) chemically bonded together.

The process of polymerization often involves the loss of water molecule. These polymers (macromolecules) are important for the optimal functioning of living systems, or the production of important substances.

you and two friends enter a contest to count the number of jelly beans in a jar. your guess are 371, 271, and 500. the actual number is 700. based on this information, which of the following statements is true

Answers

Answer:

Neither precise nor accurate.

The values are not close to 700 (not accurate) nor are they close to each other ( not precise)

Select the statements that accurately describe endocytosis.a. The cell synthesizes proteins that pump large hydrophilic materials into the cell.b. The cell selectively filters small nutrients through specialized membrane pores.c. The cell expends energy to transport materials into the cytosol.d. The cell membrane invaginates and pinches off, creating a vesicle within the cell.e. The cell membrane pinches off to form an extracellular vesicle joined to the cell by filaments.

Answers

The answer is the cell membrane invaginates and pinches off creating a vesicle within the cell.

10. Read the following hypothesis: Plants that receive too much water will not grow well because their roots
begin to rot. Suppose an investigation is planned to explore the hypothesis. What is the independent
variable of the investigation?
the amount of water given to the plants
the type of plant that is used in the experiment
the height of the plants at the end of the experiment
the mass of the plants at the end of the experiment

Answers

Answer:

the amount of water given to the plants

Explanation:

the independent variable is the variable that the researcher controls. if you want to see how the amount of water affects roots, you would add less or more water, which is the variable that is being controlled by the researcher!

hope this helps!

what is the optimal ph that this enzyme functions at

Answers

Answer:

optimum temperature

Explanation:

Describe the scientific process's importance.

Answers

Answer:

identification of problem

formulation of hypothesis

procedures of carrying out experiment

carry out experiment

analysis of experiment of data

observation of the experiment

conclusions and documentation

Ischemic death of tissue in visceral organs such as the heart typically produces:________

a. coagulative necrosis
b. liquefactive necrosis
c. caseous necrosis
d. fat necrosis

Answers

Answer:

A; Coagulative necrosis

Explanation:

What is a contributor of global warming? A. aerosol sprays B. carbon dioxide C. acid rain D. garbage

Answers

Co2 gas increases the temperature of the earth's atmosphere and can this lead to global warming. It can lead to melting of glaciers causing sea level to rise thus submerging islands.

In biology, interacting populations in a particular area are called an

Answers

It is called biological community. Community made up of interacting populations in a certain area at a certain time.

1. How does Dr. Werner's project protect iguanas and help local farmers too?
2. Why do you think that she trains farmers to raise and value iguanas?
a. What could her larger goal be?
3. Can you think of a similar project that would be suitable for your area?

Answers

Answer:

hi sir this channel and subscribe and rainfall the plant is a push and rainfall the forests and the nucleus is a

You’d have to give us the full question for us to answer correctly. Could you do that?

Suppose a gene from a cow is introduced into a frog. This results in a ________ transgene.

Answers

Answer:

Heterologous transgene.

Explanation:

Heterologous transgene can be defined as the expression of a gene from another animal into another. Such an animal that this gene is introduced to does not have such a gene in them naturally, this is done through a firm of DNA technology.

So when a gene from an animal such as a cow is put into another animal like the frog, the result is heterologous transgene.

EASY QUESTION. WILL MARK BRAINIEST



What is the relationship between biotechnology, sharkskin, and disease resistance?

a. Bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it.

b. Disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks.

c. Scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease.

d. Sharkskin produces many chemicals that can be collected and used to create antibiotics.

Answers

Answer:

A

Explanation:

a. Bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it.

In the carbon cycle, decomposition by bacteria causes the:
A. absorption of reactants for photosynthesis.
B. conversion of inorganic carbon into organic matter.
C. release of carbon dioxide from organic matter.
D. breakdown of fossil fuels into usable energy.
SUBMIT

Answers

Answer:

C. Release of carbon dioxide from organic matter.

Explanation:

Using the specific steps of the scientific method, tell me how you would use the scientific method to solve this problem: A family wants to test the effectiveness of a misting shower head in conserving (saving) water compared to their regular shower head.

Answers

Answer:

Explanation:

Scientific Research is a method used in the construction and testing of a scientific hypothesis.

It has six steps that can be used in solving questions ask or observations made which is A family wants to test the effectiveness of a misting shower head in conserving (saving) water compared to their regular shower head.

Steps to follow:

Make an observation: An observation would be made on how water is been used in the house and how it can be conserved, this observation is what brings about the question asked

Ask a question : The question is

which is more effective in conserving water a misting shower head or regular shower.

Form a hypothesis, or testable explanation: An hypothesis is formulated for the question asked

Example: Null hypothesis: Mistling shower conserves more water than shower head

Alternative: Mistling shower conserves less water that normal shower.

Make a prediction based on the hypothesis: Predictions are made on what could be the cause if there is indeed a difference and what could cause the difference

Test the prediction: An experiment is conducted to test the hypothesis if indeed Mistling is better than normal shower, the appropriate method is determined to be used for the experiment.

Iterate: The result gotten helps to butters our hypothesis if its to be acceoted or rejected. If rejected further research can be conducted on the effectiveness of normal shower in conserving water.

Worldwide health issues are complex real-world problems. So why is there often not a single solution to these problems?

Answers

Answer:

Worldwide health issues are complex real-world problems because this problems are usually caused by diseases, pests, vectors and poor hygiene. All the factors listed vary according to geographical and economic conditions. Hygiene is good and better in first world countries such as USA and very poor in Third World countries.

Pests and diseases are also sometimes peculiar to a certain area which makes the issue of solving world health issues a very complex one as a result of it not being universal most of the time.

1
f(x) =
and g(x) = x - 2
x+5
What are the restrictions of the domain of f(g(x)) ?

Answers

Answer: x ≠ -3

Explanation:

the right answer that showed up.

Answer:

its 6

Explanation:

What are the restrictions on the domain of g ∘ f? x ≥ ?<<<<<< that was the question if anyone was confused.

What term is used to describe 100’s or 1000’s of amino acids chemically combined?

Answers

Answer:

Polypeptide

Explanation:

Amino acids are the building block and simplest unit of protein molecules. The structural composition of each amino acids is made up of an amine group (-NH2), a carboxylic acid group (-COOH), a hydrogen atom (H) and a R side chain that differentiates every amino acid from one another.

In a reaction process called condensation, amino acids are chemically joined together via the amine group of one and the carboxylic group of another. This process releases water molecule (H20) to form a bond called PEPTIDE bond between the amino acids. Several amino acids in their 100’s or 1000’s that are chemically joined this way forms a POLYPEPTIDE chain, which in turn forms the protein molecule.

Several classes of students wanted to know if the temperature of the soil changed with the temperature of the air. They
recorded the temperature of the soil and the air in the same place, three times a day, for three days. Each class made a chart.
At the end, two classes compared charts. Their results were different.
What could the students in the two classes do to figure out why their results were different?
A)
They could see which chart looks the best.
B)
They could go to a third class and copy their results.
They could check each others' work and look for mistakes.
D)
They could let the teacher tell them whose numbers are correct.

Answers

The answer would be C

If a purebred white horse C^w and purebred black horse C^B are bred together, what is the likehood that their offspring will roam with both colors represented?
O 0%
O 25%
O 50%
0 100%

Answers

Answer:

The likelihood that their offspring will roam with both colors represented is of 100%.

Explanation:

The exposed example brings up the case of a codominance example. When the hair color of horses is codominant, roan coats occur. Roan horses express both the colored and the whited hairs, with some of the animal´s parts expressing mostly the colored hairs, such as head, tail, and legs. These animals have white hair and another solid color (such as black). When two purebred animals with different genotypes and phenotypes are crossed, the whole offspring will be heterozygous.  In this case,  a purebred white horse C^w and purebred black horse C^B are bred together. The offspring will carry the heterozygous genotype C^wC^B. The offspring will have both red and white hairs.

In codominance, both alleles can be expressed. In these cases, heterozygote individuals instead of showing an intermediate phenotype, express both of the alleles (red and white hair). Their phenotype is an additive expression of their parents' genes.

Cross) purebred white horse C^w and purebred black horse C^B

Parental)  C^w C^w    x    C^BC^B

Gametes)C^w   C^w      C^B    C^B

F1) 100% roan animals, black and white.

     100% Heterozygous C^wC^B

     

I need help !!

The functional units of kidneys where blood is filtered and urine produced are called

A.Pyramids

B.Nephrons

C.Calyces

D.lobules

E.Lobes

Answers

Answer:

B.Nephrons

HOPE IT HELPS!

PLS MARK AS BRAINLIEST!!!

Consider these sentences. Scenario A: Carmen reads an article in Tasty Food magazine stating that eating an apple can help you feel awake and alert. Scenario B: Yuki reads an article in the Professional Journal of Medicine stating that ginger root can help prevent some types of cancer. Which article is more likely to have been peer reviewed? How do you know?

Answers

Answer:

Scenario B is more likely to have been peer-reviewed because it was published in a scholarly journal (Professional Journal of Medicine).

Explanation:

A peer-reviewed article is an article that has undergone review by experts in the same field as the author in order to ascertain how original and quality-oriented the article is before publication in a journal. The experts from the same research field as an author are the "PEERS". A successful peer-reviewed article is deemed to be of high quality.

Although there are many features an article must possess in order to know it has been peer-reviewed but one of the most important features is that the article will be published in a REPUTABLE SCHOLARLY JOURNAL. This is the case of the article in scenario B, which was published in the Professional Journal of Medicine not just any non-academic random magazine as in scenario A.

Answer: The article that Cicely read (Scenario B) has been peer reviewed. This article is published in a scientific journal and has been judged for quality by other professionals in the field.

Explanation: I just took the quiz on Edge, I hope this helps!

Which of the following is a hypothesis that could be tested in a High School Biology classroom?

Answers

Answer:

Discover the volume of a balloon.

Explanation:

Get a balloon and a piece of paper. Cut the paper to make a line, and make sure it is 100 cm x 2 cm Take on of the balloons and inflate it several times so you are sure you can inflate the balloon with only one breath. Take a deep breath and inflate the balloon. Use a binder clip to hold the neck so no air escapes. Make a measurement of the circumference of the balloon using v = c3/6(pie)2 - the formula is c cubed divided by 6 times pie squared equals volume. Create a graph for them to answer, and then give questions for them to turn in.

What is an advantage and a disadvantage of using 4.5-7.5 paper for PH analysis?

Answers

Advantage: You can know the exact ph value with a narrower range.

Disadvantage: You don't know the exact ph value on a regular scale.

The advantage of using the 4.5-7.5 paper

The 4.5-7.5 paper gives an accurate data or response when compared to the 0-14 paper

The disadvantage of using the 4.5-7.5 paper

It is impossible to know the exact pH on the regular pH scale when using this paper.

A pH is often used to measure the following; concentration of hydrogen ions in a solution, the alkalinity, acidity, or neutrality of a solution.

A 4.5-7.5 paper is said to be more accurate or right when compared to 0-14 paper because the colors on the pH paper are very similar to more than one color on the pH color chart and so you need the one that we give you the accurate data of what you want.

Conclusively, we can say that the advantage of using the 4.5-7.5 paper is that:

The 4.5-7.5 paper gives an accurate data or response when compared to the 0-14 paper

The disadvantage of using the 4.5-7.5 paper

It is impossible to know the exact pH on the regular pH scale when using this paper.

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Which quantity may be calculated directly using Newton’s second law of motion? weight velocity position direction

Answers

Answer: Newton's second law of motion can be used to calculate weight.

Answer:

Weight

Explanation:

please help marking as brainliest image is shown down below with questions. Answer is only needed without explaination.......

Answers

Answer:

BrainlySakeen have already wrote it.

What are the sources of energy for the providers of Chemical compound

Answers

Answer:

Experience gained from over 20,000,000 operating hours. Clean energy production with biomass gasification. wood gasifier. Combined heat and power. Biomass CHP. biomass gasification.

Answer:

1. Natural Gas

2. Natural Gas Liquids

3. Heavy Liquids

4. Electricity

5. Coal

6. Liquefied Petroleum Gas

e.t.c

You water three sunflower plant with salt water. Each plant receives a different concentration of salt solutions . A fourth receives pure water. After a two -week period, the height is measured . What is the independent, dependent and controlled variable.

Answers

Answer:

Independent - Water/Type of water (salt and pure)

Dependent - Height of plant

Controlled - Amount of water

Explanation:

Independent is what the experimenter manipulates (in this case being the type of water.)

Dependent is what the experimenter measures and is a result of the independent (in this case being the height of plant)

Controlled is what you are trying to keep the same (in this case the amount of water you give each plant.)

In the experiment given, the independent variable is the salt water, the dependent variable is the height of each plant, and the sunflowers are the control variable.

Variables in an experiment can be one of three kinds:

Control Dependent Independent

The dependent variable is the variable that will change based on the other variables, this is often what the experiment seeks to measure. In the case given, the variable that will be measured is the height of the plants, therefore this is the dependent variable.

The independent variable is one that will not depend on the other variables in the experiment. Since the salt water used for each plant does not depend on the kind of plant or on its height, we can infer that the salt water is the independent variable of this experiment.

The control variable is the variable that remains constant in an experiment in order to not affect the outcome. Since for each case in this experiment there is no difference in the kind of plant that is used, we can say that the sunflower plant is the control variable.

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