Meiosis produces gametes during sexual reproduction. as seen here, meiosis results in four haploid gametes. review the process as well as the results of meiosis, paying particular attention to the green circled area. what statements, in the prompt, accurately describes what is modeled here?

a. crossing over results in the exchange of genetic material of homologous chromosomes.
b. fertilization produces offspring with varied genetic combinations.
c, chromosomes are randomly assorted into gametes.
d. at the completion of meiosis, all four gametes differ.
e. no two offspring can ever be identical.

a) a - e

b) a - d

c) a - c

d) a and b

The correct answer is option B) "A - D".

Explanation:

The statements about meiosis that are true are the following:

A. "Crossing over results in the exchange of genetic material of homologous chromosomes". During crossing over, matching regions of homologous chromosomes break and reconnect to each other. This results in the exchange of genetic information and the creation of recombinant chromosomes.

B. "Fertilization produces offspring with varied genetic combinations". During fertilization each parent contribute randomly to the genetics of their offspring. This random contribution is the result of the creation of the gametes during meiosis.

C. "Chromosomes are randomly assorted into gametes". Gametes have half of the genomic material of their parent cells. The assortment of the genomic material in the haploid cells that are the gametes is completely random.

D. "At the completion of meiosis, all four gametes differ". Four haploid gametes are produced as result of meiosis. The genomics of the four gametes completely differ, each one containing a single copy of each chromosome, but with unique DNA sequences.

cancer   is   essentially   uncontrolled   mitosis   of specialized cells

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