Many models of the evolutionary consequences of mutation assume that the rate of back mutation is negligible. When is this a reasonable assumption?.

the correct answer would be 6 feet.

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.