Chapter 3 Flashcards
1
Q
Difference between genotype and phenotype
A
Genotype is genetic information contained in DNA while phenotype is the outward expression of the DNA.
2
Q
We have __ Autosomes
A
22
3
Q
Homozygous vs heterozygous
A
Homozygous means both alleles are the same while heterozygous means they are different.
4
Q
Genome is
A
Sum total of all genes in a cell’s chromosomes.
5
Q
In females one X chromosome is shut down.
A
ye
6
Q
A shut down x is called the
A
barr body
7
Q
Females are known as
A
Mosasics
8
Q
Mosaic is helpful because
A
Since they have two x’s, they get more of a mixture of mom and dad’s x, since inactivation is random.
9
Q
nucleotide is
A
the structural unit of DNA
10
Q
3 parts of nucleotide
A
Phosphate and sugar backbone that facilitate the purines and pyrimidines (ATCG)
