A sterile mule is produced by mating a horse and a donkey. From this observation you could conclude

A. that horses and donkeys are the same species.
B. that horses and donkeys are different species.
C. that mules are a result of macroevolution.
D. increasing the number of mules in a population will affect the allele frequency in the next generation.
E. the DNA sequences of horses and donkeys are more than 97% identical.


B. that horses and donkeys are different species.

Biology & Microbiology

You might also like to view...

The genotype of a particular pea plant is TtYy, corresponding to a phenotype of tall and yellow. How many different types of gametes are expected to be produced by this individual?

A) 1 B) 2 C) 4 D) 5 E) 8

Biology & Microbiology

How do monotremes differ from other mammals? Check all that apply.

_____ Monotremes lay eggs. _____ Monotremes are found only in New Guinea and Australia. _____ Monotremes lack a placenta. _____ Monotremes have poorly developed nipples. _____ Monotremes are cold-blooded.

Biology & Microbiology

A 3.6 million-year-old partial skeleton, named Lucy, represents an individual who was a member of

A) Australopithecus afarensis. B) Homo erectus. C) Homo habilis. D) Australopithecus garhi.

Biology & Microbiology

Which of the following is a neurotransmitter that triggers a contraction of a voluntary muscle?

A) acetylcholine B) action potential C) synapse D) sodium

Biology & Microbiology