Explain two important sources of genetic variation in meiosis. Evolutionarily speaking, why do you think is it important that meiosis involves recombination of the genes?
What will be an ideal response?
Crossing over and independent assortment provide genetic diversity within a species. This is important because without genetic diversity, there is very little chance that a species will adapt to ever-changing environmental conditions. Species with low genetic diversity have a high probability of going extinct if the environmental conditions change.
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Which scientific objective is LEAST related to microbial genetics?
A) determining the ancestral origin of a recently discovered bacterium B) identifying mutations in a bacterial population C) identifying quorum sensing interactions among bacteria D) manipulating a microorganism for bioremediation
Which of the following foods has the greatest amount of available water?
A. cake B. steak C. jam D. syrup
The concept of nuclear equivalence states that:a
all of the somatic cells in an adult organism have the same genes. b. the genes of the individuals of the same species are exactly the same. c. as cells mature, unneeded genes are lost. d. the nuclei of all organisms are the same. e. nuclei of individuals of the same species are the same size.
When scientists inserted the Bt toxin gene into plant cells they created a Select one:
a. transgenic plant. b. monohybrid. c. clone. d. stem cell. e. new species.