Question

In: Biology

Which of the following evolutionary processes creates new genetic variation?

Which of the following evolutionary processes creates new genetic variation?


a.

Natural selection


b.

Genetic drift


c.

Mutation


d.

Both a and b


e.

Both b and c


Solutions

Expert Solution

GENETIC VARIATION

Evolutionary processes creates new genetic variation

THE CORRECT ANSWER IS E) BOTH B & C

EXPLANATION

When there is a change seen in the gene and gene frequencies it is called as genetic variation.

Genetic variation is also called as the raw material for evolution.

GENETIC DRIFT

When there is any alteration in an allele frequency, in the natural population by pure chance is called genetic drift. For example, there can be an elimination of a particular allele from a population due to certain events such as accidental death prior to meeting of an organism.

Smaller the populations, greater are the chances of genetic drift.

GENE MUTATION

When there are changes in the chemical makeup of a gene, it is called as gene mutation or point mutation. Due to mutations, there is disturbance in the gene pool (Gene pool is the sum total of all individuals of interbreeding population) thereby causing change in gene frequency.

NATURAL SELECTION

Natural selection is a link between the changes in the environment and genetic variation of the species attempting to survive and reproduce.

Natural selection invariably encourages those jeans which are highly adaptive to to environment.


Related Solutions

Which of the following processes creates new genetic variation? A) Natural Selection B) Genetic Drift C)...
Which of the following processes creates new genetic variation? A) Natural Selection B) Genetic Drift C) Mutation D)Both A and B E) Both B and C
9. Which evolutionary processes can increase genetic variation in a population? 10. Is it possible to...
9. Which evolutionary processes can increase genetic variation in a population? 10. Is it possible to have evolution without natural selection?
Which of the following processes is the ultimate source of the genetic variation that serves as...
Which of the following processes is the ultimate source of the genetic variation that serves as raw material for evolution? a.) Sexual Reproduction b.) Mutation c.) Natural Selection d.) Genetic Drift
Describe and discuss the following processes by which genetic variation increases: A. Independent drawing of chromosomes...
Describe and discuss the following processes by which genetic variation increases: A. Independent drawing of chromosomes B. Crossing over C. Random Fertilization
Which processes lead to most genetic variation in sexually reproducing organisms?
  Which processes lead to most genetic variation in sexually reproducing organisms?   Select all that apply.   random fertilization   cytokinesis   crossing over   independent assortment of chromosomes in meiosis
Whys is genetic variation necessary to the process of natural selection? What processes provide genetic variation...
Whys is genetic variation necessary to the process of natural selection? What processes provide genetic variation and how do they work?
why is there genetic variation? what processes shape the genetic structure of populations?
why is there genetic variation? what processes shape the genetic structure of populations? what causes populations to be different? what causes divergence?
Which processes associated with meiosis ensure genetic diversity in offspring? Name two processes that promote variation...
Which processes associated with meiosis ensure genetic diversity in offspring? Name two processes that promote variation and explain how they operate.
1. Evolutionary process and genetic variation: a) Explain to the general public how genetic variability occurs...
1. Evolutionary process and genetic variation: a) Explain to the general public how genetic variability occurs in domesticated organisms, and why mutation is an essential component that allows for production of new agricultural varieties. b) Explain the following statement to a college science freshman: “The genetic variation on which natural selection acts may occur randomly, but natural selection is not random at all.” c) Describe two situations where mutations are random, and two situations where the mutations are not random.  ...
Describe the four evolutionary mechanisms that alter the frequencies of existing genetic variation in natural populations....
Describe the four evolutionary mechanisms that alter the frequencies of existing genetic variation in natural populations. You need to define each mechanism and describe at least one example of its action in natural populations (e.g., genetic drift in overhunted populations resulting in less genetic diversity).
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT