PLEASE ANSWER ASAP!:) In a breed of dogs, yellow coat color is dominant, while black coat color is recessive,
Which of the following genotypes would produce a black puppy
1) AA
2) Aa
3) aa

A: 3 only
B: 1 and 3
C: 1 only
D: 1 and 2

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.