Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of sequence homology? Dogs and wolves _____

A) have very similar morphologies
B) belong to the same order
C) are both members of the order Carnivora
D) share a very recent common ancestor


D

Biology & Microbiology

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LUCA, the last universal common ancestor, is:

A. a prehistoric protozoan cell. B. an embryonic cell (in fetus). C. the simplest bacterial cell. D. a cell from which all organisms descended.

Biology & Microbiology

Hyaline cartilage is found in

a. intervertebral discs. b. the outer flaps of the ears. c. adipose tissue. d. the trachea. e. in the knee joint.

Biology & Microbiology

The genotype Aa is referred to as

a. heterozygous. b. incompletely dominant. c. homozygous recessive. d. homozygous dominant. e. codominant.

Biology & Microbiology

Gap junctions in animal cells are most similar to ________ in plant cells?

A. primary cell walls B. hemidesmosomes C. plasmodesmata D. tight junctions E. middle lamella

Biology & Microbiology