3/7/17 Sex and gender - sex deterimination I Flashcards Preview

BIOL 1003 > 3/7/17 Sex and gender - sex deterimination I > Flashcards

Flashcards in 3/7/17 Sex and gender - sex deterimination I Deck (13):
1

aids virus graph

look at it again

2

older you are, more ___ you have

parasite larvae

3

bdelloid rotifer

example

4

monoecious

plants have sex; one house- both male and female parts are on the same individual

5

dioecious

seaparate sexes- two houses- separate male and female plants

6

sex in humans and mammals determined genetically by

XY, XX

7

homogametic sex

xx, all eggs have 1 x chromosome, relative gametes

8

heterogametic sex

xy, 1/2 sperm have x chromose, two differnet gametes relative to sex chromose

9

Y chromosome has what

SRY region

10

SRY region

sex determining region on Y, only on Y chromose, determines Maleness by producing a transcription factor - protien turns all male characteristics on for genes throughout human genome

11

transcription

DNA to RNA

12

sex linkage

traits- sex linked traits, genes affect traits- found on sex chromosomes- genes found speicifcally on X chrormosomes, males more likely to express rescessive alleles, males cant be hetero or homozygous

13

homoglogus chromosome

same genes on both chromosome

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