What is the age of the oldest rock that has been found and dated? a) 3 billion years b) 3.5 billion years c) 4 billion years d) 4.5 billion years

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.