Biology, 22.08.2019 01:30, 1thousandwishes
Which form of natural selection on polygenic traits results in the creation of two distinct phenotypes?
a. directional selection
b. artificial selection
c. stabilizing selection
d. disruptive selection
Answers: 2
Biology, 21.06.2019 17:20, owensdonld
The trp operon in e. coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.
Answers: 1
Biology, 21.06.2019 19:30, AaronEarlMerringer
Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.
Answers: 1
Which form of natural selection on polygenic traits results in the creation of two distinct phenotyp...
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