Slideshow 16

Question 1

condensation of chromatin leads to what

Answer 1

solenoids

Question 2

assembly of the nucleosome results in what

Answer 2

histone tails

Question 3

epigenic marks are what

Answer 3

chemical modifications to histone tail amino acids that affect chromatin structure

Question 4

what are the 3 common epigenic marks

Answer 4

histone acetylation
histone methylation
DNA methylation

Question 5

histone acetylation def

Answer 5

decondensation of chromatin . expression.

Question 6

DNA methylation def

Answer 6

specifically CG is the target of the promoter. no expression

Question 6

histone methylation def

Answer 6

condensation of the chromatin. no expression

Question 7

no expression is what

Answer 7

closed. and condensed

Question 7

expression is what

Answer 7

open and not condensed

Question 8

methylated promoter equals what

Answer 8

no expression

Question 9

no methylation of the promoter equals what

Answer 9

active expression

Question 10

at nuclear scale we can seee what in the nucleas

Answer 10

heterochromatin and euchromatin

Question 11

heterochromation def

Answer 11

heavily condensed areas of chromatin “the bad”

Question 12

euchromation def

Answer 12

acetylated, open areas of chromatin. genes are actively expressed. “good”

Question 13

two types of heterochromation

Answer 13

faculative and constitutive

Question 14

faculative def

Answer 14

the hetero CAN be converted to euchromatin

Question 15

constitutive def

Answer 15

will ALWAYS remain heterochromatic

Question 16

Epigenic marks are passed on when

Answer 16

during DNA replication

Question 17

if a parent cell is methylated , what happens to the daughter cells

Answer 17

they must both be methylated as well

Question 18

to get methylated daughter cells, what extra step occurs

Answer 18

DNA methyltransferase

Question 19

transgenerational epigenetic inheritance is possible is what

Answer 19

many organisms, though not mammals

Question 20

odarent def

Answer 20

induces egg laying

Question 21

big picture of transgenerational epigenetic inheritance

Answer 21

its a long term phenotypic consequences due to the environmental conditions of a few ancestors that will affect a wide range of generations to come.

Question 22

epigenetic def

Answer 22

upon genetics or in addition to genetics

Question 23

promoter leads to wild type or agouti

Answer 23

agouti

Question 24

dosage compensation is necessitate by what

Answer 24

an unequal number of sex chromosomes in different sexes

Question 25

unequal dosage means what on an autosomal locus

Answer 25

there would be 2 x dosage of protein A in males and females

Question 26

unequal dosage means what on x chromosomal locus

Answer 26

there would be 2x dosage of protein B in females but only 1x dosage of protein b in males

Question 27

what does dosage compensation mean

Answer 27

that there would be 1x dosage of B in females, and then seperately there is 1x dosage of B in males.