The continued geographic isolation of Kaibab squirrels from Abert squirrels has allowed the animals to evolve into
two distinct subspecies. This is an example of:
a. hybridization.
b. allopolyploidy.
c. adaptive radiation.
d. allopatric speciation.
e. sympatric speciation.
d
Biology & Microbiology
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Long-period comets are believed to originate in the ____________
Fill in the blank(s) with correct word
Biology & Microbiology
Which cellular structure makes sugars and proteins in plants?
a. Vacuole b. Centriole c. Nucleus d. Golgi body e. Chloroplast
Biology & Microbiology
Which of the following traits is not characteristic of amphibians?
a. carnivorous as adults b. four-chambered heart c. needing water to breed d. evolved from lobe-finned fish
Biology & Microbiology
During anaphase I of meiosis
A. crossing-over occurs. B. homologous chromosomes pair up. C. mutations are common. D. segregation of alleles occurs.
Biology & Microbiology