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Question
In a human female, what happens to the collection of oocytes in the ovaries once puberty begins?
A) The oocytes all mature into eggs as soon as puberty is reached.
B) Ovulation stimulates all of the oocytes to complete meiosis II.
C) One oocyte per month matures and completes meiosis I.
D) One oocyte per month matures and completes meiosis I and meiosis II.
E) All ooctyes are expelled from the ovaries to complete meiosis II.
Answer
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Related questions
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Which of the following best describes the period during which the developing offspring is considered a fetus?
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B) from fertilization to eight weeks
C) the first trimester only
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E) from nine weeks until birth
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Which of the following statements concerning sperm and fertilization is correct?
A) The first sperm that approaches the egg is the one to fertilize the egg.
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C) The first capacitated sperm fertilizes the egg.
D) Several sperm must contribute their DNA to the egg for fertilization to occur.
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A man has been experiencing reduced urine flow problems. After examination by his doctor, the diagnosis is an enlarged prostate gland. What is the connection between prostate enlargement and reduced urine flow?
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Sperm development takes about:
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C) 6 months.
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The sequence of development of sperm is:
A) primary spermatocyte, secondary spermatocyte, tertiary spermatocyte, spermatid, sperm.
B) primary spermatocyte, spermatogonia, sperm.
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D) spermatogonia, spermatocyte, spermatid, sperm.
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The vas deferens ducts empty sperm into the:
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Which structure would be best described as helping to prepare the female tract for pregnancy and maintain it during the early phases of pregnancy?
A) vagina
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D) corpus luteum
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On average, about how often does ovulation occur?
A) every 6 months
B) every 28 days
C) every 14 days
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Through what structure does an oocyte travel on its way to the uterus?
A) uterine tube
B) cervix
C) vagina
D) ovary
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If you could stop diffusion of substances in fruit fly zygotes, could you stop normal development? Why or why not?
Q:
Programmed cell death is also known as ________.
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You are a substitute teacher in a high school biology lab class on the day the students are dissecting frogs. A particularly bright student happens to notice that the left adrenal gland is malformed in her frog. She asks if a problem in embryonic development could have caused that. Although there may be more than one reason, what might you propose as an explanation based on embryonic development?
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The end of a zygote that contains less yolk is the animal pole.
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A) sonic hedgehog
B) sonic chicken
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Which of the following is a process by which an initial set of genes turns on a second set of regulatory genes, which eventually turns on a third set of genes?
A) developmental chain reaction
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What is the effect of higher concentration of bicoid protein in part of a fruit fly embryo?
A) It will develop into the posterior end of the organism.
B) It will develop into the heart of the organism.
C) It will develop into the head end of the organism.
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Of the choices listed, the first event that occurs during embryonic development is:
A) germ layer formation.
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A) The vegetal pole is composed of a single, large cell.
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E) The vegetal pole is the site of the development of the mouth.
Q:
The phase during which embryonic cells arrange themselves into three layers is called:
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B) gastrulation.
C) organogenesis.
D) fertilization.
E) induction.