Why does a plant cell have a cell wall but an animal cell doesn't

Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.