i believe its IB IB and IBi aka choice B
Answer:
DNA is the chemical name for the molecule that carries genetic instructions in all living things. The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix.
Explanation:
What happens is it alters the regulation of the expression of the gene. Sometime you will see a loss of function, or reduction of ability to work such as complete loss of a protien code. Or you can gain a function or to much. So it doesn't regulate what it needs well and keeps producing when it shouldn't.
Answer:
Option d: black 75%, white 25%
Explanation:
The cross is between a homozygous black and a heterozygous black guinea pig
Parents gen. BB x Bb
F1 generation BB Bb Bb bb
The probability of an offspring with the same phenotype as its parents is
Genotype: BB - 25% and Bb - 50%, bb-25%
Phenotype: black 75%, white 25%
Answer:A
Homozygous means both alleles are the same. This leaves A and B
Only choice A has heterozygous(different) alleles for offspring,so it is the right answer
