Dominant is always denoted by capital letters. Recessive is always denoted by lowercase letters. Homozygous refers to both alleles of the trait being the same. Heterozygous means both alleles of the trait are different.
Homozygous Dominant:
SS, BB
Heterozygous:
Ss, Bb
Homozygous Recessive:
ss, bb
1: microevolution
2:macro evolution
Fact check for the answer:
I just did this on USA Test Prep, and I can confirm the answer is B!!
Mitochondria are made from the process called binary fission. This is the cell division utilized by the prokaryotes. It also has circular DNA that is similar in both size and structure in prokaryotic cells. Mitochondria also has its own DNA different than the DNA found in the nucleus of a cell.
