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12 Dec 2019

Gametogenesis in males a) occurs throughout life. b) occurs in the ductus deferens. c) is initiat ed in the seminiferous tubules. d) is ini t iated during fetal development.

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Related questions

The human AFP gene encodes alpha-fetoprotein (AFP), a major plasma protein produced by the yolk sac and the liver during fetal life. Your lab discovers that AFP protein is only found in fetal livers and not present in adult livers. It is known that the transcription factor Foxa1 is an activator of the AFP gene.

How would you test fetal liver and adult liver samples for the presence of Foxa1 protein? What two techniques could you use to measure this?

Your tests show that Foxa1 protein is abundant in both fetal and adult liver cells. Propose and describe an epigenetic mechanism that explains how AFP expression is regulated in human liver cells throughout development.

Based on this proposed model, what is one way doctors might try to activate AFP expression in adult livers via a noninvasive recommendation or procedure?

Design an experiment with proper controls to test whether your treatment/recommendation initiates AFP expression via your proposed epigenetic mechanism. (feel free to look up the names of techniques that can measure epigenetic markers).

1.) Meiosis is an importance component of cell cycle.

a.) Describe how this process varies from mitosis with respect to chromosome number and genetic diversity. Use appropriate terminology.

b.) Describe where, how and why offspring obtain genetic variation with respect to these processes.

c.) X and Y are considered heteromophic. Describe how they interact during meiosis and explain what events transpire to maintain equal gene dosage between male and females in the same species.

d.) Gametogenesis differs slightly between males and females. Describe a major similarity and a major difference in this process between the sexes.

Which of the following are factors that likely influencephenotype? Select all correct answers.

a) Uterine environment during fetal development

b) Differences in the cytoplasmic contents between two(otherwise identical) populations of kidney cells

c) Temperature

d) Diet

e) Combinations of alleles in your genome

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