Mark received one dominant allele for brown hair from his father and another dominant allele from his mother.
Which word describes his genotype?
A blonde
B heterozygous
Chomozygous
D brown

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Select all that apply genes are specific nucleotide sequences occur in numbers that are the same as the number of chromosomes are located in a specific place on a chromosome determine the traits of an organism are units of rna

Explain why scientists use the word dominant for certain traits.