dna methyl Flashcards
1
Q
Proportionate heritabiulity
A
the amount of phenotypic variance
that can be explained by genes
in a given population
1
Q
Dna methylyation
A
the process by
which methyl (-CH3
) groups are
added to particular nucleotides in
a DNA segment so as to modify
the expression of a gene
2
Q
histone modification
A
occurs when histone-modifying enzymesjoin methyl groups to histone tails and modify how tightly
a DNA molecule is wrapped around it. If the DNA is condensed tighter around the
histone, it makes it more difficult for the genes to be transcribed and less likely to be
expressed. Alternatively, if the DNA becomes less tightly packed, the genes will be
easier to transcribe and more likely to be expressed
