Genetics Flashcards
1
Q
DNA stands for
A
deoxyribonucleic acid
2
Q
Genes are composed of
A
sequences of DNA
3
Q
Humans have about _____ protein-coding genes
A
20000
4
Q
Each DNA subunit consists of
A
one deoxyribose molecule, one phosphate group, one base
5
Q
One deoxyribose molecule, one phosphate group, one base is called
A
a nucleotide
6
Q
proteins are composed of one or more
A
polypeptidesd
7
Q
polypeptides consist of a series of
A
amino acids
8
Q
The body contains this many amino acids
A
20
9
Q
Amino acids are specified by
A
4 nitrogenous bases
10
Q
Triplets of nitrogenous bases are
A
codons
11
Q
There are how many possible codons
A
64
12
Q
Protein synthesis takes place in the
A
cytoplasm
13
Q
Two types of human cells
A
gametes and somatic
14
Q
Each somatic cell nucleus has how many chormosomes
A
46
15
Q
cells with a normal number of chromosomes
A
euploid
