Sexual reproduction in eukaryotes increases genetic variation. In prokaryotes, transformation, transduction, and conjugation are mechanisms that increase genetic variation
A fundamental difference between the generations of genetic variation in the two domains is: A) Eukaryotes are able to generate mutations in response to environmental stress while prokaryotes only generate random variation.
B) Eukaryotic variation occurs primarily within a single generation while prokaryotic variation occurs over many generations.
C) Crossing over is a major mechanism in creating genetic variation in prokaryotes while independent assortment is a major mechanism is eukaryotes.
D) Eukaryotic genetic variation occurs with vertical gene transfer while prokaryotic genetic variation occurs with horizontal gene transfer.
D
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A (n) ________ vector is a plasmid that can be replicated in several different organisms because it has at least one origin of replication that will function in each host.
A. phage B. expression C. shuttle D. chimeric
Uplift and formation of a mountain range divides a freshwater snail species into two isolated populations. Erosion eventually lowers the mountain range and brings the two populations together again, but when they mate, the resulting hybrids all produce sterile young. This scenario is an example of
a. sympatric speciation b. punctuated equilibrium c. allopatric speciation d. the gradual model of speciation
ADH ________ the permeability of the cells of the collecting duct to water
Fill in the blank(s) with correct word
In estimating the linear probability model for whether an individual clicked through on an advertisement based off whether the individual is on a mobile device or not, which of the following conditions may not hold from the resulting regression (ClickThroughi = ?0 + ?1Mobilei + Ui)?
A. The sum of the residuals for the mobile observations will be zero. B. The sum of the residuals will be zero. C. The sum of the residuals for the non-mobile observations will be zero. D. The sum of the predictions will be zero.