Question

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.

Answer 1

The correct statement about the reproductive system is that the acrosome is an enzyme-filled vesicle that enables sperm to penetrate the ovum. Spermatogenesis occurs in the seminiferous tubules, each gamete contains 23 chromosomes, and the absence of testosterone leads to the default development of female reproductive structures.

Step-by-step explanation:

The question pertains to the human reproductive system, focusing on attributes of spermatogenesis, the role of different components of sperm, the genetic aspects of gametes, and the development of reproductive tracts in the absence of certain hormones. Here is a detailed answer explaining each statement's accuracy:

• Spermatogenesis does not occur in the seminal vesicles, but rather in the seminiferous tubules located in the testes.
• The acrosome is indeed an enzyme-filled vesicle at the tip of the head of the spermatozoon, and its role is essential in enabling the sperm to penetrate the ovum.
• Each gamete (sperm or oocyte) contains 23 chromosomes, which is half the number found in somatic cells.
• In the absence of testosterone, indeed a female reproductive tract and external genitalia develop, suggesting that the default developmental pathway is female unless influenced by androgens.
• An XY combination of sex chromosomes is typically indicative of a genetic male, impacting the development of male reproductive structures.

Based on the provided information and my understanding of the reproductive system, the correct statement among the options provided is (b) The acrosome is an enzyme-filled vesicle at the tip of the head of the spermatozoon that enables the sperm to penetrate ovum.

Answer 2

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.

Step-by-step 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.