1. Which of the following are haploid? A) Secondary spermatocytes. B) Spermatids

Question

1. Which of the following are haploid? A) Secondary spermatocytes. B) Spermatids. C) Spermatozoa. D) All of the above.

2. Unlike mitosis, meiosis ensures that _________.

A) genetically unique daughter cells are produced

B) the same number of chromosomes is passed to the next generation

C) there is genetic variation in the species

D) all of the above

2. In animals, mature male gametes are called ________.

A) spermatogoina B) spermatides C) spermatoza D) primary spermatocytes

B) the same number of chromosomes is passed to the next generation

C) there is genetic variation in the species

D) all of the above

Explanation / Answer

Answer:

1). D) All of the above.

Explanation:

The following sequence is process of spermato genesis.

Spermatogonium (2n)----Primary spermatocyte (2n)--------Secondary spermatocytes (n)------Spermatids (n)------Spermatoza(n).

2). C) there is genetic variation in the species

Explanation:

During meiosis, crossingover takes place between non-sister chromatids of homologous chromosomes, which causes genetic variations in the daughter cells of meiosis.

3). C). Spermatozoa

Explanation:

Spermatozoa are the mature male gametes in many sexually reproducing organisms.

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