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julia-pushkina [17]
4 years ago
14

What is the purpose of natural selection

Biology
2 answers:
madam [21]4 years ago
8 0
Natural selection<span> is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.</span>
enot [183]4 years ago
3 0

to keep life going even as the environment changes

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Freud is to ________ as rogers is to ________.
Vaselesa [24]
Freud is to free association, while on the other hand, Rogers is to active listening. These are great people who modeled the foundation of psychology as what we understood right now. Sigmund Freud is the founder of psychoanalysis while Rogers is the founder of the humanistic approach to psychology.
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3 years ago
What sets of instructions in each human cell that determine inherited traits called?
larisa [96]

Answer:

Genes carry the information that determines your traits (say: trates), which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes.

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I WILL GIVE U BRAINLEST what has hands but can’t clap
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Answer:  clock cant clap

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Describe the process of altering the genetic variation of a cell using a genetically modified virus for human gene therapy. In t
Len [333]
In human gene therapy, a genetically modified virus (a.k.a. a viral vector) can alter the genetic variation of a cell, but not all viral vectors do.

The process often begins with the delivery of or creation of a segment of viral double stranded DNA (containing the gene you want to introduce). Then typically an enzyme known as an integrase cuts the ends of the segment of viral DNA and also cuts open the cell's DNA. Then the viral DNA is integrated/ inserted into the cell's DNA. The connecting ends are ligated together and adjusted so that the nucleotide base pairs match up.

This in the future may affect the gene pool for instance if the viral DNA (your gene) was inserted in the middle of another gene or important regulatory sequence of the cell DNA, and this alteration may be passed on into offspring and become present in the gene pool, which could have bad effects.

The effects on the gene pool really depends on what the virus ends up doing. For example, it may fix the function of a damaged gene which is the goal, and allow for a working gene to be in the gene pool, which would be good. The problem with gene therapy is that it's difficult to predict 100% what the virus will do every time it is given to a patient.

But it's very important to consider that it will only affect the gene pool if the virus is able to enter and alter germ cells (reproductive cells). If the virus, enters somatic cells (regular body cells) this will not be passed on to future generations. So viruses can be designed to avoid germ cells and avoid this gene pool issue. Also, some viral vectors use viruses that do not integrate their DNA, the cells just express the viral DNA (create the desired protein from it) and over time the viral DNA is degraded/ lost which wouldn't pose this threat.

This is long, but I hope it helped!
3 0
4 years ago
Study the structure of the plant growing on the rock in the image. Based on its structure, to which group does the plant belong?
dusya [7]

The plants can be classified based on their vascular and reproductive structures. The plant given in the image belongs to the Bryophyta.

<h3>What is Bryophyta?</h3>

The non-vascular plants that are a part of the plant classification are found in moist places and are small in size belongs to the Bryophyta.

The plant of this classification have a leafy multicelled plant body, that lacks true leaves, roots, and stems.  They are green plants and also contains chloroplast for food synthesis.

The vascular tissue like xylem and phloem are completely absent and hence the transportation does not occur through specialized systems.

Therefore, option A. Bryophyta is the plant growing on the rock.

Learn more about Bryophyta here:

brainly.com/question/1435423

5 0
2 years ago
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