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Question 2 (Multiple Choice Worth 4 points)
(03.04 MC)
Which of the following statements is correct regarding prokaryotic genetics?
A) Crossing over during prophase I introduces a significant amount of genetic variation.
B) Mutations in the DNA are a primary source of variation in prokaryote populations.
C) Prokaryotes skip sexual life cycles because of their need to quickly reproduce
D) Prokaryotes exchange some of their genes by the union of haploid gametes or transduction,

Respuesta :

Answer:

B

Mutation is the ultimate source of genetic variation, but mechanisms such as sexual reproduction and genetic drift contribute to it as well Because prokaryotes are haploid, such a mutation immediately become part of the genetic makeup of the cell unlike eukaryotic diploids where a normal second copy of the gene usually protects the cell from the potentially lethal effect of such a mutation.

Lanuel

The statement which is correct regarding prokaryotic genetics is: B) Mutations in the DNA are a primary source of variation in prokaryote populations.

Genetics can be defined as the scientific study of hereditary and its components (genes, chromosomes, etc.) within the body of an organism such as an animal, human, and plant.

A prokaryote can be defined as a unicellular organism which is typically characterized by a cell that is devoid (lacking) of a well-defined cell organelle such as a nucleus.

Unlike eukaryote, a prokaryote doesn't have a well-defined, membrane-bound nucleus but has a nucleoid instead.

A nucleoid refers to an irregularly-shaped portion inside the cell of a prokaryote where all or most of its genetic materials are located.

Generally, there are three (3) main modes of genetic transfer for all prokaryotes and these include:

  • Transduction.
  • Transformation.
  • Conjugation.

A primary source of genetic variation in prokaryote populations is caused as a result of mutations (changes in gene sequence) in the deoxyribonucleic acid (DNA).

In conclusion, mutations (changes in gene sequence) in the deoxyribonucleic acid (DNA) is a primary source of genetic variation in prokaryote populations.

Read more: https://brainly.com/question/24261254

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