Which of the following statements of the reproductive system would be true?
a. spermatogenesis takes place in the seminal vesicles.
b. the acrosome is an enzyme-filled vesicle at the tip of the head of the spermatozoon that enables the sperm to penetrate ovum
c. each gamete contains 23 chromosomes.
d. in the absence of testosterone, a female reproductive tract and external genitalia develop regardless of the genetic sex individual
d. an xy combination of sex chromosomes is a genetic male.

b. The acrosome is an enzyme-filled vesicle at the tip of the head of the spermatozoon that enables the sperm to penetrate ovum

c. Each gamete contains 23 chromosomes.  

d. In the absence of testosterone, a female reproductive tract and external genitalia develop regardless of the genetic sex individual  

e. An xy combination of sex chromosomes is a genetic male.

Explanation:

The acrosome is a structure present at the tip of the head of sperm and facilitates entry of sperm into the ovum through the actions of its enzymes such as hyaluronidase.

Gametes are the products of meiosis and carry half the number of chromosomes present in the somatic cells. Each of the human gametes (sperm and egg) are haploid cells with 23 chromosomes.

Human follows XX-XY type of sex determination wherein the presence of one X and one Y chromosomes as the sex chromosomes is a feature of males.

Testosterone is one of the testicular hormones required for the development of male secondary sexual characters and the male reproductive system. If testosterone is not secreted, human males with XY sex chromosomes develop the feminine characters.

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