For a given element, all atoms of that element
have the same number of
a. neutrons.
b. electrons.
c. protons.
d. protons and neutrons.
e. ions
C
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A mutation in a gene that results in a defective protein product is known as a ____ mutation
Fill in the blank with the appropriate word.
The model of island biogeography predicts that species richness will increase with decreasing distance from a species source pool. Which do you think would be considered the two most important source pools for a particular island? Select two options.
_____ A small, distant island. _____ A nearby island undergoing primary succession. _____ The closest mainland area. _____ A nearby, large island. _____ A distant, large island with similar habitats.
Most monoploid individuals do not survive because
A) they do not have the appropriate gene dosages. B) their cells cannot divide properly. C) recessive lethal mutations cannot be masked by dominant alleles. D) they have missing genes. E) they have only one sex chromosome.
Both the founder effect and the bottleneck effect are mechanisms that produce large allele frequency sampling errors in a small population due to __________
A) random mutation B) gene flow C) gene drift D) lethal alleles E) random mating