Germ Cells and Gamete Production

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SharpChalcedony
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23 Questions

What is the role of germ cells?

To give rise to gametes

What molecules are localized in the cytoplasm and give rise to the germ cells in fish, frogs, and flies?

Germplasm

What environmental factor can affect the likelihood of sex determination in reptiles?

Temperature

Which gene affects the maleness of an organism and is found on the Y chromosome?

Sry

What triggers an autoregulatory mechanism to continue the process for male development?

SOX9 induced by SRY

Which factor is needed to ensure the repression of SOX9 for ovarian development?

Foxl2

What process do germ cells undergo to move to the gonads and be stored until the organism reaches adult stage?

Primordial germ cell migration (PGC migration)

Which process is regulated by the suppression of testis development?

Ovarian development

Which factor is needed to ensure the repression of SOX9 for ovarian development?

Foxl2

What environmental factor can affect the likelihood of sex determination in reptiles?

Temperature

What is the role of germ cells?

Move to the gonads and be stored until adult stage

Which gene affects the maleness of an organism and is found on the Y chromosome?

SRY gene

What triggers an autoregulatory mechanism to continue the process for male development?

SRY gene presence inducing SOX9

What process do germ cells undergo to move to the gonads and be stored until the organism reaches adult stage?

Primordial germ cell migration

Which process is regulated by the suppression of testis development?

Ovarian development

What molecules are localized in the cytoplasm and give rise to germ cells in fish, frogs, and flies?

Germplasm

What is the role of the Sry gene in sex determination?

It triggers an autoregulatory mechanism for male development

In which animal is sex determination affected by temperature?

Reptiles

What is the function of the g-protein CXCR4 in primordial germ cell migration?

It targets the gonad and expresses ligand SDF1

Which gene is associated with stem cell pluripotency?

Oct4

What process do germ cells undergo to be stored in the gonads until the organism reaches adult stage?

Primordial germ cell migration

What is the effect of the absence of Foxl2 on ovarian development?

Expression of SOX9 and presence of oocytes

Which molecule(s) localized in the cytoplasm give rise to germ cells in fish, frogs, and flies?

Germplasm

This quiz covers the characteristics and production of germ cells, which give rise to gametes and are totipotent. It also includes information on the molecular processes involved in germ cell production in different organisms.

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