A ____ is a sequence of DNA that determines a trait.
Group of answer choices
gene
replication
double helix
nucleotide
The correct answer is "gene".
Cytosine always pairs with thymine.
Group of answer choices
True
False
False
Each person has (how many) copies of each gene.
Group of answer choices
four
two
unlimited
thousands
Group of answer choices
Each person has (how many) copies of each gene.
four
two
unlimited
thousands
Two
If a grasshopper's sex cell has 12 chromosomes, its body cell has (how many) chromosomes.
Group of answer choices
6
24
48
12
If a grasshopper's sex cell has 12 chromosomes, its body cell has 24 chromosomes.
A mutation is any change in the _____.
Group of answer choices
ABC
ATP
DNA
USA