URGENT PLZ ANSWER Select all of the ways in which genetic variation can be achieved:

a) Mutations that will allow an organism to survive occur spontaneously
b) In sexual reproduction, genes from paired chromosomes can shuffle and cross-over
c) Mutations can create a new variation of a gene
d) Mutations can kill a variation of a gene
e) In sexual reproduction, genes from different chromosomes can shuffle and cross-over

Which excerpt from the land, part 4 best supports the claim that paul is a talented horseback rider? a/“figure that says more than anything else! now, i want to ride that stallion! " b/my daddy shook his head. "paul only rides horses he knows. ” c/? i glanced over at the other rider. the fellow was older than i, and had the weight of a man on him. d/a man out of alabama, man name of ray sutcliffe, told my daddy i was such a good rider, he wanted me to ride some races for him.

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe