It is thought that life arose on earth around four billion years ago. The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes.
Answer:
Allele
Explanation:
Genes come in multiple forms, or versions. Each of these forms is called an allele. For example, the gene responsible for the hair color trait has many alleles: an allele for brown hair, an allele for blonde hair, an allele for red hair, and so on.
Answer:?
Explanation:Please clarify more on this question as for it is not very specific
F=.25
So the answer would be C
