Crossing over is a process that occurs during formation of gametes. How does crossing over lead to genetic variation in offspring?
Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
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Plz help! 15 points
• Would a plant be able to survive if the ground tissue was damaged?
Answer: I don’t think so because it needs the carbohydrates produced by the plant.
Explanation: No because the soil would be contaminating the soil until it reaches a point where the soil begins to tear and cracks will open in the soil and the air will be polluted, it would be an uninhabitable planet
Red blood cells do not have a nucleus but the ____ has a lot of haemoglobin to carry more oxygen.
Answer:
Red blood cell has lot of haemoglobin to carry more oxygen
Psychology Short Essay
100 points and Brainliest quick!!!!!!!
40. Discuss some of the reasons suggested that we need sleep, and then explain what happens
during the early and late stages of sleep.
Answer:
Here is your answers hope I helped!
Explanation:
Here are some reasons why we need to sleep.
If you don't sleep enough or sleep well it's going to cause types of headaches, insomnia, or other types of syndromes etc, this could also lead to stress and anxiety.
If you sleep well your body and muscles well be healthy and relaxed, it also depends how much hours you sleep if you oversleep too much it could led to narcolepsy
Stages
The first stage of sleep, known as light stage sleep, is one of the shortest, lasting five to ten minutes on average. In this stage, the mind and body begin to 'slow down,' causing us to feel drowsy and relaxed.
Stage 2 and stage 3 can have light or deep Slow waves, delta sleep, or deep sleep it depends.
Stage 4 which is the last stage is called the REM or aka rapid eye movement, this stage causes your brain activity to increase and this stage is where you might be dreaming the most.
b cells that have been stimulated by interleukin-2 develop into _____.
What are organic reservoirs meaning.
What organism belongs to the Prokaryotic domain of life and it comes in three different
shapes, such as cocci, rod, and spiral?
Answer:
eubacteria
Explanation:
I took the quiz :)
The organisms that belong to the Prokaryotic domain of life and it comes in three different shapes, such as cocci, rods, and spirals are known as Eubacteria.
What do you mean by the Prokaryotic domain?The prokaryotic domain may be characterized as the kingdom of Prokaryotes is significantly made up of two domains namely, Archaea and Bacteria. These eubacteria are classified under the domain of bacteria which is represented by the relation based on the DNA experimental approach.
According to the context of this question, there are mainly three types of eubacteria commonly found. They are round (coccus), rod-like (bacillus), comma-shaped (vibrio), or spiral. All these types of different body plans, structures, and functions with respect to their morphology.
Therefore, eubacterium is a type of organism that belongs to the Prokaryotic domain of life and it comes in three different shapes, such as cocci, rod, and spiral.
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Protists are organized into the following six groups: Excavata, Chromalveolata, Rhizaria, Archaeplastida, Amoebozoa, and Ophisthokonta. What are these groups called
Answer:Major Groups of Protists
Explanation:
Describe the structural make-up of a gene?
Answer:
Structure of gene:
The chemical structure of a gene comprises nucleotides. A part of DNA- genes are made up of A, T, G and C nucleotides
Explanation:
Rank the following according to size from smallest to largest: univierse, stars, galaxies
1) Star
2) Galaxies
3) Universe
Explanation:
Please mark as brain list
Answer:
In this order.
Star
Galaxy
Universe
Which sentence best explains how a positive feedback loop affects climate
change?
A. As the number of plants increases, the amount of CO2 decreases.
B. High clouds have a high albedo and reflect solar energy back into
space.
C. As climate warms, CO2 increases because plants remove less of
it.
D. High precipitation results in increased plant growth, lowering CO2.
A positive feedback loop that affects climate is change as the number of plants increases, the amount of CO2 decreases.
The more trees the less CO2?Scientists agree that one of the most effective ways to absorb part of the CO2 from the atmosphere would be to plant more trees, as they use CO2 to grow and release oxygen, this action brings benefits to the entire environment.
With this information, we can conclude that A positive feedback loop that affects climate is change as the number of plants increases, the amount of CO2 decreases.
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What two products result from photosynthesis?.
Answer:
glucose and oxygen
Explanation:
i hope this helps
identify the three types of symbiotic relationships and give an example of each in your answer be sure to describe the relationship
Answer:
mutualism, commensalism, and parasitism
Explanation:
mutualism, commensalism, and parasitism
What is a vertebrate?
a) an animal with radial symmetry
b) an animal without a backbone
c)
an animal that is asymetrical
d) an animal with a backbone
Answer:
d) an animal with a backbone
Explanation:
Describe the structure and parts of DNA molecule
Answer:
The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), and thymine (T).
Explanation:
hopefully it's helpIn a laboratory experiment, researchers placed guppies in three different types of pools: no predation, low predation, and high predation. Researchers hypothesized that predation is a selective force and that large, brightly colored guppies are more conspicuous to predators. Based on that, what would predict the guppies will look like in the pool with high predation after 10 generations?
A) They should be smaller and not very brightly colored
B) They should be large and brightly colored
C) They should be very small and very brightly colored
D) They should be very large but not very brightly colored
Answer:
A) They should be smaller and not very brightly colored
Explanation:
I just took the test. Good luck friend!
which set of details correctly identifies a series of events in a sympathetic pathway?
Answer:
Thoracolumbar origin, short preganglionic fiber, ACh release at ganglion, long postganglionic fiber, NE release at effector
What are the nerve roots that are shaped like a horse's tail and that extend down from the end of the spinal cord?
Answer:
a. Cauda equina
Explanation: is correct
Which of the following organelles is found in both plant and animal cells? group of answer choices central vacuole cell wall golgi apparatus chloroplasts.
Answer:
Golgi apparatus is present in both plant and animal cells
66
Chapter 6 Discussion
nts
This discussion will require you to do an experiment with a friend or a member of your family. This experiment is
suggested by Stanley Coren and his associates to demonstrate Weber's law (Coren, S., Ward, L., & Enns, J.T. (2003)
Sensation and perception (6th edition) New York: Wiley.)
et
You need three quarters, two envelopes, and a pair of shoes (preferrably heavier than a tennis shoe).
1. Place one quarter in one envelope and the remaining two quarters in the other
2. Have the person lift each envelope and tell you which is heavier
3. Have the person go away or turn around, and then place each of the envelopes into separate shoes
4. Have the person lift each shoe and tell you which is heavier
urces
. What were your results?
• Why?
• What was at work here?
• Describe how this principle might impact other areas of our everyday lives.
• Give at least three specific examples.
Respond to at least one other classmate.
This experiment shows that people often associate weight with quality. That is, the heavier it is, the better it is. This experiment proves that this thinking is illogical.
How may this experiment help in business?Because man is a rational being who is not consistently logical or rational, it may help to ensure that ones product of good quality and heavier than that of the opposition.
Recall that people often make decisions that are irrational as long as they are happy with it.
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Which of the following represent the organization of cells in a simple reflex arc?.
which parts of the monomers involved in the dimer formation
Answer:
A dimer (/ˈdaɪmər/) (di-, "two" + -mer, "parts") is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, covalent or intermolecular. The term homodimer is used when the two molecules are identical (e.g. A–A) and heterodimer when they are not (e.g. A–B).
Explanation:
In experiments with competitive barnacle species distributed along upper and lower intertidal zones, researchers found a trade-off between ability to _____ and ability to _____.
In this case, researchers observed a trade-off between the ability to tolerate harsh dry conditions and the ability to colonize deeper water. This type of trade-off can increase the fitness of only one phenotypic trait.
An evolutionary trade-off can be defined as an evolutionary mechanism where a trait can increase its adaptive fitness in the detriment of decreased adaptive fitness in another phenotypic trait.
In trade-offs, the evolutionary adaptive processes cannot optimize a given trait without compromising another.
A well-known example of an evolutionary trade-off is the balance between the number of eggs that a bird can produce in a determined clutch.
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Cellular respiration is a complex process that
1- occurs before autotrophs are able to carry out photosynthesis
2- occurs only in animals that take in oxygen
3- is performed only by organisms that are incapable of photosynthesis
4- breaks down organic molecules to release stored energy
True or false: Tonic contraction of smooth muscle in blood vessels is important in maintaining blood pressure.
How can I use the analogy of building blocks to explain how genes relate to the diversity of life?
Answer:
-Building blocks are the fundamentals to an overall result, in this case being the characteristics of a human being.
-This is related to genes as the variety of building blocks can make a completely different "outcome" just as a different gene can trigger a different characteristic.
- Without different building blocks, all outcomes will be the same, just as humans. So a variety of "building blocks" are needed for diversity.
Explanation:
Hope this helps.
How is water split into hydrogen and oxygen during photosynthesis?
Explanation:
The chlorophyll's donated electrons need to be replaced, and these electrons come from the splitting of water. In a process called photolysis ('light' and 'split'), light energy and catalyst s interact to drive the splitting of water molecules into protons (H+), electrons, and oxygen gas.
Which of the following is/are producers?
SELECT ALL THAT APPLY
a certain fungi
b certain bacteria
call plants
d algae
Answer:
Ans- B)certain bacteria
C) all plants
D) Algae
Producers:the organism which make their own food.Also known as autotrophs.
Which are the bones of the axial skeleton? Check all of the boxes that apply.
Answer:
Skull (cranium)
Skull (facial)
Auditory ossicles (three in each ear - not shown)
Hyoid (neck bone, aids speech - not shown)
Vertebral column
Thorax (sternum)
Thorax (ribcage)
Explanation:
Number 4……………………………..
If the new gene "works", then it will synthesize a missing enzyme or structural protein. A gene is a protein-coding nucleotide (DNA) sequence.
A gene is a fragment of DNA that is used by the cell to create a complementary mRNA sequence by a process called transcription.
Subsequently, this mRNA is then used to synthesize a protein by a process called translation.
When a gene is defective, a change in the nucleotide sequence (i.e., a mutation) can restore normal gene function and thus produce a functional protein.
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