Allopatric speciation is often exemplified in which type of geographical area or biome?
a. islands
b. deep sea
c. grasslands
d. mountain ranges
e. rainforest canopy
a
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Which of the following can reduce the level of genetic diversity?
1.gene flow 2.sexual selection 3.polyploidy speciation 4.genetic drift
Mutations that eliminate a contiguous region in the Drosophila embryo's segmentation pattern are called ________
A) gap genes B) linkage genes C) compartment genes D) segment genes E) homeodomains
Other than predation by introduced Nile perch, the most likely explanation for the recent decline in cichlid species diversity in Lake Victoria is _____
A) reinforcement B) fusion C) stability D) polyploidy
The skin inhibits bacterial growth by releasing
A) lysozyme. B) macrophages. C) T cells. D) white blood cells. E) lactic acid.