You have two black dogs who have a litter of puppies. You are surprised to find that there are 8 black puppies and 3 tan puppies. Which statement is NOT correct?
A) Both parents must be pure bred.
B) Black fur is dominant to tan fur.
C) Both parents must be heterozygous for fur color.
D) Crossing two hybrid parents produces a 3:1 ratio of phenotypes

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.

Adistinctive characteristic of mammals that is not observed in other vertebrates is

Forensic scientists think they know the identity of a skeleton. what rule should they use to select a relative whose dna could be used to try to confirm the identity?