If goats are crossed with sheep, embryos will form but cease development and spontaneously abort. This is an example of

A. a prezygotic mechanism.
B. hybrid inviability.
C. hybrid sterility.
D. hybrid breakdown.
E. spermatic behavior.


B. hybrid inviability.

Biology & Microbiology

You might also like to view...

Which of the following is an important characteristic for a model organism?

A) marginally characterized B) difficult to manipulate in the laboratory C) prone to random changes that alter primary characteristics D) widely studied E) all of the above

Biology & Microbiology

The most medically important bacteria sought in the medical laboratory are cultivated using incubators with temperatures maintained in what range?

a. 35°C to 37°C b. 30°C to 35°C c. 37°C to 39°C d. 25°C to 35°C

Biology & Microbiology

Hydrophobic interactions would occur between the R groups of which two amino acids in Figure 3-2?

a. 1 and 4 b. 2 and 5 c. 3 and 6 d. 2 and 4 e. 3 and 5

Biology & Microbiology

A mutation that affects the genotype of the organism but not the phenotype is called a

a. nonsense mutation. b. missense mutation. c. frameshift mutation. d. silent mutation.

Biology & Microbiology