Before a cell divides, an exact copy of each chromosome is made by the process of
A) genetic engineering

B) replication

C) mutation

D) recombination

What maintain homeostasis when a persons internal body temperature is 97.5°f

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes