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sveta [45]
2 years ago
14

Nuclei in somatic cells of the freshwater alga Draparnaldia plumosa have 13 chromosomes. In the closely related species Draparna

ldia acuta, nuclei in somatic cells have 26 chromosomes.
Which of the following is correct:
a. Gametes of Draparnaldia acuta should contain 13 chromosomes.
b. Draparnaldia plumosa zygotes contain 26 chromosomes; meiosis should occur after fertilization.
c. Draparnaldia acuta is a diploid organism; the expected n number for its haploid gametes is 13.
d. Draparnaldia plumosa is a monoploid organism with n = 13.
e. All of the above
Biology
1 answer:
Natasha_Volkova [10]2 years ago
6 0

Answer:

b. <em>Draparnaldia plumosa</em> zygotes contain 26 chromosomes; meiosis should occur after fertilization.

Explanation:

<em>Draparnaldia plumosa </em>is a freshwater green algae. The thallus of this species is haploid. Each cell of the thallus has 13 chromosomes in its nucleus. During sexual reproduction thallus forms gametes through mitosis. After fertilization between isogametes, a diploid zygote is formed having 26 chromosomes. Zygote undergoes meiosis to form haploid thallus.

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This is the remaining incomplete part of the question.

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Explanation:

Cellular DNA replication                            Polymerase chain reaction

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strand                                                       strand

Requires dNTPs                                       Requires dNTPs

Uses helicase                                           Requires cycles of heating

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