BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 51, Problem 6U
Summary Introduction
Introduction:
Gametogeneis is a process by which germ cells undergo cell division to form haploid gametes. In females, egg is produced. Oogenesis is the process in females that results in the formation of mature egg. One egg (female gamete) is produced from four haploid cells by the process of meiosis.
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Which of the following stages of the fertilization process stimulates completion of meiosis II in the oocyte’s nucleus?
A. The sperm nucleus and egg nucleus combine to form the genetic material of the zygote
B. Sperm release enzymes to digest the protein layer of the secondary oocyte
C. The entry of a sperm into the secondary oocyte
D. The swimming of sperm from the vagina, through the uterus, and up to an oviduct
Which is/are true concerning chromosomal sex determination?
a.
Anyone born with two x chromosomes is a male
b.
Sperm always contain Y chromosomes
c.
Testis Determining Factor is produced by the SRY allele present on the Y chromosome
d.
Under normal circumstances, a human embryo that has both and X and a Y chromosome is male.
Microscopic examination of a section of a normal young adult ovary reveals large numbers of
unusually large cells surrounded by a single layer of flat epithelial cells. In which phase of the cell
cycle are these cells arrested?
A. Diplotene stage of the 1st meiotic division
B. Diplotene stage of the 2nd meiotic division
C. Metaphase stage of mitosis
D. Prophase stage of mitosis
E. Prophase stage of the 2nd meiotic division
Chapter 51 Solutions
BIOLOGY
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 3LOCh. 51.2 - Prob. 1LOCh. 51.2 - Prob. 2LOCh. 51.3 - Prob. 1LOCh. 51.3 - Prob. 2LOCh. 51.3 - Prob. 3LOCh. 51.4 - Prob. 1LOCh. 51.4 - Explain ovulation and the female reproductive...
Ch. 51.4 - Prob. 3LOCh. 51.5 - Prob. 1LOCh. 51.5 - Describe causes of infertility.Ch. 51 - Prob. 1DACh. 51 - Why might it be adaptive for an individual to be...Ch. 51 - Prob. 2IQCh. 51 - Why do you think the brain is affected when the...Ch. 51 - You have discovered a new organism living in tide...Ch. 51 - Prob. 2UCh. 51 - Prob. 3UCh. 51 - Which of the following structures is the site of...Ch. 51 - FSH and LH are produced by the a. ovaries. b....Ch. 51 - Prob. 6UCh. 51 - Mutations that affect proteins in the acrosome...Ch. 51 - In humans, fertilization occurs in the____, and...Ch. 51 - The testicles of male mammals are suspended in the...Ch. 51 - Prob. 1ACh. 51 - Which of the following is a major difference...Ch. 51 - Prob. 3ACh. 51 - Internal and external fertilization differ in that...Ch. 51 - Prob. 1SCh. 51 - Why do you think that amphibians and many fish...Ch. 51 - How are the functions of FSH and LH similar in...Ch. 51 - Prob. 4SCh. 51 - Why are all parthenogenic parents female?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- An individual has the chromosomal makeup XX and sexual differentiation proceeds normally. Which of the following would be the case? a. Mullerian ducts will degenerate b. Estrogen promotes development of the vagina c. Anti-Mullerian hormone is present d. Wolffian ducts will develop e. There will be no formation of fetal testesarrow_forwardRegarding oogenesis, diplotene stage begins at a.birth b.Meiosis II c.7th month of fetal development. d.pubertyarrow_forwardWhy is a second polar body expelled after fertilisation (select one) a. The oocyte must recativate the incomplete meiosis before fusing with the sperm b. To remove excess cytoplasm c. Before fusion with the sperm it must complete mitosis d. The fertilised oocyte is not a haploid cell until it expels the sperms mitochondriaarrow_forward
- Which one is not a product of Meiosis I in gametogenesis?* A.Secondary oocyte B.First polar body C.Secondary spermatocyte D.Second polar bodyarrow_forwardDIRECTION: Study the diagram below. Then, answer the analysis questions that follow. 3 HYPOTHALAMUS GNRH 1) 2. ANTERIOR PITUITARY ) Hormone 1 Hormone 2 (rising) (low) (surge due to • loop) Growing Follicie "OVULATION" ORGAN A Corpus Luteum (rising) Lthish) Hormone 3 (high) (high) Hormone 4 LEGEND Inhibits --- ORGAN B Stimulates Endometrium thickens "E is not fertilized" "Egg is fertilized" EVENTI EVENT II 3. ---arrow_forwarda. What phase of meiosis is this cell undergoing? b. Identify the 3 things that are incorrect in terms of this cells structure and organization? c. Would this cell produce viable gametes? Why or why not.arrow_forward
- What is the role of the SRY gene on the Y chromosome? a. Production of Mullerian hormone proteins b. Production of Anti-Mullerian hormone proteins c. Production of TDF (Testis-Determining Factor) d. Production of prostaglandin e. Production of testosteronearrow_forwardWhich of the following statements is/are true? A. Spermatogenesis is an example of asymmetric cell division. B. The formation of a mature egg occurs through symmetric cell division. C. Spermatogenesis and oogenesis are both examples of asymmetric cell division. D. Spermatogenesis involves only symmetric cell division whereas oogenesis involves asymmetric cell division.arrow_forwardCleavage... A. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space B. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg C. Refers to the fusion of haploid gametes to give a diploid zygote D. Produces an embryo with either two or three distinct cell layers E. None of the abovearrow_forward
- In humans, how many functional gametes are produced by spermatogenesis and oogenesis? Select one: a. Spermatogenesis Oogenesis One Four b. Spermatogenesis Oogenesis Four One c. Spermatogenesis Oogenesis Four Four d. Spermatogenesis Oogenesis One Onearrow_forwarda. The ovaries produce secondary the female sex cells. b. Stem cells, called divide by to produce primary each form part of a c. At the onset of puberty, tens of thousands of ovaries. Between menarche and menopause, each primordial follicle develops into a in the and its primary oocyte completes d. Some primary oocytes become 23-chromosome cells that begin then pause. secondary oocyte is released into is completed when e. Each month, the uterine tube. the oocyte isarrow_forwardWhich of the following correctly describes the gametes that will form as a result of nondisjunction during anaphase II in a human male? a. Two sperm with 24 chromosomes and two sperm with 22 chromosomes b. Two sperm with 23 chromosomes, one sperm with 22 chromosomes, and one sperm with 24 chromosomes c. Four sperm with 24 chromosomes d. Four sperm with 22 chromosomesarrow_forward
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