BLG 111 Chapter 27 Exam Questions
& Answers (Grade A+)
What are the primary functions of the reproductive system? -
correct answer ✅1. Form gametes (sperm in males, ova in
females). 2. Combine genetic information through fertilization to
form a zygote. 3. Support development of the fetus and birth.
What are the primary sex organs (gonads) in males and females? -
correct answer ✅Testes in males and ovaries in females.
What are the two main products produced by gonads? -
correct answer ✅1. Gametes (sperm in males and ova in females).
2. Sex hormones (testosterone in males, estrogens and
progesterone in females).
What is the role of sex hormones in the reproductive system? -
correct answer ✅They are vital for the development and function
of reproductive organs, sexual behavior, and sexual drives.
What is the Hypothalamic-Pituitary-Gonadal (HPG) Axis? -
correct answer ✅It is the hormonal system that regulates the
production of gametes and sex hormones through interactions of
GnRH, FSH, LH, testosterone, and inhibin.
,BLG 111 Chapter 27 Exam Questions
& Answers (Grade A+)
What hormones are involved in the regulation of the reproductive
system? -
correct answer ✅GnRH, FSH, LH, testosterone, estrogen,
progesterone, and inhibin.
What happens to the hypothalamus during puberty? -
correct answer ✅It becomes less sensitive to inhibition by sex
hormones and begins to release GnRH in a pulse-like manner.
What is meiosis? -
correct answer ✅A unique kind of nuclear division that occurs only
in gonads, reducing the number of chromosomes in gametes by
half.
What are sister chromatids? -
correct answer ✅Identical copies of a chromosome that are joined
together by a centromere.
What are homologous pairs of chromosomes? -
correct answer ✅Pairs of chromosomes, one from each parent,
that carry the same genes coding for the same traits.
,BLG 111 Chapter 27 Exam Questions
& Answers (Grade A+)
What are nonsister chromatids? -
correct answer ✅Chromatids of one chromosome that are
nonsister chromatids to another chromosome in a homologous
pair, which can exchange DNA during crossing over.
What is the difference between diploid and haploid cells? -
correct answer ✅Diploid cells contain 23 pairs of homologous
chromosomes, while haploid cells contain a single set of
chromosomes (n).
What are the two main stages of meiosis? -
correct answer ✅Meiosis I and Meiosis II.
What is the outcome of meiosis? -
correct answer ✅The product is four haploid daughter cells.
What occurs during prophase of meiosis? -
correct answer ✅Homologous chromosomes pair up and crossing
over may occur.
, BLG 111 Chapter 27 Exam Questions
& Answers (Grade A+)
What occurs during metaphase of meiosis? -
correct answer ✅Homologous pairs align at the cell's equatorial
plane.
What occurs during anaphase of meiosis? -
correct answer ✅Homologous chromosomes are pulled apart to
opposite poles of the cell.
What occurs during telophase of meiosis? -
correct answer ✅The cell divides, resulting in two daughter cells.
What is crossing over? -
correct answer ✅The process during prophase I of meiosis where
nonsister chromatids exchange DNA.
What is the significance of the zygote? -
correct answer ✅It is the first cell of a new individual formed
when sperm and egg fuse.
What is the role of inhibin in the reproductive system? -
correct answer ✅It is released from gonads and exerts negative
feedback on FSH release from the anterior pituitary.
& Answers (Grade A+)
What are the primary functions of the reproductive system? -
correct answer ✅1. Form gametes (sperm in males, ova in
females). 2. Combine genetic information through fertilization to
form a zygote. 3. Support development of the fetus and birth.
What are the primary sex organs (gonads) in males and females? -
correct answer ✅Testes in males and ovaries in females.
What are the two main products produced by gonads? -
correct answer ✅1. Gametes (sperm in males and ova in females).
2. Sex hormones (testosterone in males, estrogens and
progesterone in females).
What is the role of sex hormones in the reproductive system? -
correct answer ✅They are vital for the development and function
of reproductive organs, sexual behavior, and sexual drives.
What is the Hypothalamic-Pituitary-Gonadal (HPG) Axis? -
correct answer ✅It is the hormonal system that regulates the
production of gametes and sex hormones through interactions of
GnRH, FSH, LH, testosterone, and inhibin.
,BLG 111 Chapter 27 Exam Questions
& Answers (Grade A+)
What hormones are involved in the regulation of the reproductive
system? -
correct answer ✅GnRH, FSH, LH, testosterone, estrogen,
progesterone, and inhibin.
What happens to the hypothalamus during puberty? -
correct answer ✅It becomes less sensitive to inhibition by sex
hormones and begins to release GnRH in a pulse-like manner.
What is meiosis? -
correct answer ✅A unique kind of nuclear division that occurs only
in gonads, reducing the number of chromosomes in gametes by
half.
What are sister chromatids? -
correct answer ✅Identical copies of a chromosome that are joined
together by a centromere.
What are homologous pairs of chromosomes? -
correct answer ✅Pairs of chromosomes, one from each parent,
that carry the same genes coding for the same traits.
,BLG 111 Chapter 27 Exam Questions
& Answers (Grade A+)
What are nonsister chromatids? -
correct answer ✅Chromatids of one chromosome that are
nonsister chromatids to another chromosome in a homologous
pair, which can exchange DNA during crossing over.
What is the difference between diploid and haploid cells? -
correct answer ✅Diploid cells contain 23 pairs of homologous
chromosomes, while haploid cells contain a single set of
chromosomes (n).
What are the two main stages of meiosis? -
correct answer ✅Meiosis I and Meiosis II.
What is the outcome of meiosis? -
correct answer ✅The product is four haploid daughter cells.
What occurs during prophase of meiosis? -
correct answer ✅Homologous chromosomes pair up and crossing
over may occur.
, BLG 111 Chapter 27 Exam Questions
& Answers (Grade A+)
What occurs during metaphase of meiosis? -
correct answer ✅Homologous pairs align at the cell's equatorial
plane.
What occurs during anaphase of meiosis? -
correct answer ✅Homologous chromosomes are pulled apart to
opposite poles of the cell.
What occurs during telophase of meiosis? -
correct answer ✅The cell divides, resulting in two daughter cells.
What is crossing over? -
correct answer ✅The process during prophase I of meiosis where
nonsister chromatids exchange DNA.
What is the significance of the zygote? -
correct answer ✅It is the first cell of a new individual formed
when sperm and egg fuse.
What is the role of inhibin in the reproductive system? -
correct answer ✅It is released from gonads and exerts negative
feedback on FSH release from the anterior pituitary.
