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Coding Terms > Coding 6 > Flashcards

Coding 6 Flashcards

1
Q

What are the sex chromosomes for birds?

A

The reverse of humans

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2
Q

What is primary sex determination or gonadal sex determination?

A

Gonad determination

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3
Q

Where do germ cells go?

A

Into the fetus and are organized into cysts and are then surrounded by pregranulosa cells

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4
Q

What are granulosa cells?

A

The cells surrounding the oocyte and differentiate

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5
Q

What are thecal cells?

A

Differentiated mesenchymal cells

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6
Q

What do the thecal cells form?

A

Ovarian follicles

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7
Q

Which genes induce testis formation?

A

Sry

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8
Q

What is sex determination?

A

The male or female phenotype generation based on the secretion of hormones

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9
Q

What is AMH?

A

It is a paracrine factor that gives rise to the female reproductive organs

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10
Q

What does testosterone do?

A

It induces the formation of male reproductive organs and signals to prevent cell death

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11
Q

What are hermaphrodites?

A

Organisms with both male and female reproductive organs

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12
Q

What are gynadromophs?

A

These are animals with both male and female parts

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13
Q

What are sex lethal genes?

A

These are genes that are activated by 2 promoters and generate RNA splicing factors that determine the sexual phenotype

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14
Q

Can sex also be determined by environmental factors?

A

Yes

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15
Q

What is gametogenesis?

A

The differentiation of the primordial germ cells

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16
Q

What do the developing gonads decide?

A

What is secreted and where does it go

17
Q

Where do the PGCs form?

A

The posterior region of the embryo

18
Q

Where do the PGCs go?

A

They migrate to the gonads

19
Q

What is the developing gonad?

A

Genital ridge

20
Q

What are migrating PGCs surrounded by?

A

SCFs

21
Q

What happens to PGCs pluripotency?

A

It decreases

22
Q

What is a gonocytes?

A

A committed germ cell

23
Q

What tells the gonocytes to undergo oogenesis and spermatogenesis?

A

Gonad

24
Q

What is a type A spermatogonia?

A

These are sperm cells held by cytoplasmic bridges

25
Q

What is a type B spermatogonia?

A

Precursors of spermatocytes contain high levels of stras

26
Q

What is the oogonia?

A

Highly proliferative egg cell

27
Q

What is the primary oocyte?

A

The surviving egg cell

28
Q

What is the secondary oocyte?

A

When undergoing meiosis the smaller cell becomes the first polar body and the larger the secondary oocyte

29
Q

What does SRY activate?

A

SRY -> SOX9 -> AMH

30
Q

What is the genital ridge?

A

The developing gonad

31
Q

What happens as primodial germ cells commit?

A

They lose potency

32
Q
A

Coding Terms (17 decks)

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