SOS:
The answers is:
In a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the <u><em>Heterozygous</em></u> genes cause the <u><em>Dominant</em></u> traits to mask the <u><em>Recessive</em></u> traits.
<em>Hope this helps!</em>
(Please rate Brainliest!)
I'm pretty sure the answer would be A. Chromosomes contain one or more genes.
C.there is no relationship between metabolic rate and body temperature.
