Why do birds and reptiles share a branch on the chordate phylogeny tree?
a. they share similar traits.
b. they are part of the same population.
c. they are part of the same species.
d. they are part of the same community.

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

Several bodily responses are described below. for each response, determine what caused the change in homeostasis. body starts to sweat breathing rate increases amount of saliva produced changes body starts to shiver