5077354
Frage 1
Frage
Which of the following is correctly matched
Antworten
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Leptotene... condensation of chromosomes
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Diplotene... pairing of homologous chromosomes
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Pachytene... crossing over/meiotic recombination
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Lepto and Pachy
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All of them
Frage 2
Frage
Primordial germ cells migrate into the developing gonad at seven weeks. The primitive sex cords formed by the PGCs is also known as an indifferent gonad.
Antworten
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both true
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first true, second false
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first false, second true
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both false
Frage 3
Frage
First meiotic division is complete in females during puberty but before puberty in males. Oocytes arrest at zygotene at birth, spermatogonia arrest in mitosis.
Antworten
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Both true
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First true, second false
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First false, second true
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Both false
Frage 4
Frage
Which of the following is the correct order of fertilization events?
Antworten
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Capacitation, recognition, egg activation, fusion of sperm, fusion of genetic materials
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egg activation, capacitation, recognition, fusion of genetic materials, acrosome reaction
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capacitation of sperm, recognition, acrosome reaction, egg activation, sperm fusion
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capacitation, recognition, acrosome reaction, sperm fusion, egg activation
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none of these choices
Frage 5
Frage
Morulas undergo flattening in a process called compaction. Compaction includes increased tight junctions, adhesions, and inner/outer polarity of cells.
Antworten
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Both true
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first true, second false
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first false, second true
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both false
Frage 6
Frage
The inner cell mass of the embryo can give rise to all 3 primary germ layers due to pluripotency and self-renewal. GATA6 and NANOG segregates the hypoblast from the epiblast.
Antworten
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Both true
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First true, second false
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First false, second true
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Both false
Frage 7
Frage
Meiosis II of the oocyte occurs after the sperm has fused with the egg membrane. Fertilization normally occurs in the ampullary of the fallopian tube.
Antworten
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Both true
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First true, second false
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First false, second true
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Both false
Frage 8
Frage
What is the correct order of the process of spermatids becoming sperm?
Antworten
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condensation of the nucleus, loss of cytoplasm, acrosome formation, middle and tail formation
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condensation of the nucleus, formation of middle piece and tail, acrosome formation, loss of cytoplasm
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acrosome formation, condensation of the nucleus, loss of cytoplasm, formation of middle and tail
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acrosome formation, middle and tail formation, condensation of nucleus, loss of cytoplasm
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loss of cytoplasm, acrosome formation, middle and tail formation, condensation of nucleus
Frage 9
Frage
What is the developmental pathway for primordial germ cells
Antworten
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epiblast, yolk sac, genital ridge, gut tube, dorsal mesentery, gonad
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yolk sac, genital ridge, epiblast, dorsal mesentery, gut tube, gonad
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epiblast, genital ridge, yolk sac, gut tube, dorsal mesentery, gonad
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yolk sac, epiblast, genital ridge, dorsal mesentery, gut tube, gonad
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epiblast, yolk sac, genital ridge, dorsal mesentery, gut tube, gonad
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