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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Gametogenesis requires the conclusion of meiosis II. When does this occur in females?
a. During fetal development
b. At the onset of puberty
c. After fertilization
d. After implantation
Which cell contributes the necessary nutrition to the growing zygote?
a
a polar body
b
the egg cell
c
a spermatocyte
d
the sperm cell
How does the production of sperm differ from the production of eggs? a. Sperm production involves meiosis, whereas egg production involves only mitosis. b. Meiosis during sperm production produces four sperm cells, whereas meiosis during egg production produces only one functional egg cell. c. Sperm are haploid, whereas eggs are diploid. d. Sperm production begins during fetal development, whereas the meiotic process that begins egg production doesn’t begin until puberty
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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- Which event leads to a diploid cell in a life cycle? a. meiosis b. fertilization c. alternation of generations d. mutationarrow_forwardThe process forming the neural tube and plate via the intercalation of cells along the medial-lateral axis and extension along the anterior-posterior axis occurs is called? a. neurulation b. embryogenesis c. convergent extension d. morphogenesisarrow_forwardWhy is a second polar body expelled after fertilisation? a) To remove excess cytoplasm b) Because the oocyte must reactivate the incomplete meiosis before fusing with the sperm 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
- In females, meiosis is not completed (a) until birth. (b) until puberty. (c) until fertilization occurs. (d) until ovulation occurs.arrow_forwardThe process by which the structure labeled B is released from the structure labeled A is known as? A. differentiation B. ovulation C. gastrulation D. germinationarrow_forwardThe..........is a hollow ball of cells that develops from the morula. a) Blastocyst b) Oviduct c) Ovary d) Chorionarrow_forward
- Which form of reproduction is useful to an animal with little mobility that reproduces sexually? a. fission b. budding c. parthenogenesis d. hermaphroditismarrow_forwardIf meiosis produce haploid cells, how is the diploid numberrestored for those organisms that spend most of their life cycle in the diploid state? a. DNA replication b. reverse transcription c. synapsis d. fertilizationarrow_forwardWhat happened if there is an excessive secretion of prostaglandin during menstruation? a,Inflammation b,Unfertilized egg is lost c,Irregular menstrual cycle d.Crampsarrow_forward
- Answer choices: A) Fertilization B) meiosis C) zygote D) gamete E) germ cellarrow_forwardIs this true or false? a. Fertilization is followed by a cleavage, a period of rapid cell division without growth. b. From the process above, this results in the production of a large number of cells called blastomeres. c. In sexual reproduction, the offspring have the same combinations of genes as their parents. d. Sequential hermaphroditism occurs when an animal is one sex during one phase of its lifecycle and the opposite sex during another phasearrow_forwardIs it possible that an unfertilized apomictic embryo sac gives rise to a diploid embryo? Give a reason in support of your answer.arrow_forward
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