Some dogs bark when trailing; others are silent. The barking trait is due to a dominant gene. Erect ears are dominant to drooping ears. What kinds of pups (their phenotype and genotype) would you expect from a heterozygous erect-eared barker mated to a droop-eared, silent trailer? So both the probable genotype and phenotype of the pups.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor

What advantages does a pedigree have over a written passage?