An organism that contains two of the same alleles for a trait is said to be for that trait.. a. heterozygous. b. homozygous. c. recessive. d. dominant

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.

What is the next step in muscle contraction after the actin changes shape

Choose the best definition of allele. a. one of several possible versions of a gene, which each produce a different phenotype b. an organism that's purebred for a given trait c. the process of fertilizing a plant with pollen from another plant d. a set of genes that are located on the same chromosome and so are tightly linked