7 Flashcards

1
Q

Aromatase

A

An enzyme responsible for converting
androgens into estrogens, aids in gonadal differentiation and temperature-dependent sex determination in reptiles.

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2
Q

Haploid-Diploid Sex Determination

A

a system used to determine sex based off of chromosme sets where haploid males develop from unfertilized eggs & diploid females from fertilized egg

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3
Q

Dosage Compensation

A

A genetic mechanism that ensures that X-linked genes are equally expressed in male and females through X-chromosome inactivation or adjustements of the gene expression

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4
Q

TDF (Testis Determining Facto

A

A TF encoded by the SRY gene on the Y chromosome, initiating male gonadal development during embryogenesis.

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5
Q

Pseudohermaphrodite

A

–when the sex of an organism does not match its phenotypic sex due to mutations that affect sexual differentiation pathways

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6
Q

Transformer (tra) Gene in Drosophila

A

A gene involved in sex determination via alternative splicing, which will produce female specific-triats if functional and sterile male phenotypes if mutated

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7
Q

X:A Ratio in Sex Determination

A

The ratio of X chromosomes to autosomes that determines sex in organisms like Drosophila, with a ratio of 1 leading to females and 0.5 to males.

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8
Q

Barr Body

A

A condensed and inactivated X chromosome observed in female cells, used as an indicator of the number of X chromosomes present.

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9
Q

DMRT1

A

A gene involved in sex differentiation and associated with male development, it’s mutations could potentially lead to sex reversal.

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10
Q

Gynandromorph

A

An organism exhibiting both male and female characteristics due to chromosomal mosaicism, often arising from the loss of a sex chromosome during early development.

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