Brown eye color requires (Select all that apply):
a. genes for the enzymes that synthesize the pigment melanin.
b. phenylalanine, form which melanin is made.
c. one dominant allele and two recessive alleles.
a. genes for the enzymes that synthesize the pigment melanin.
b. phenylalanine, form which melanin is made.
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A prokaryotic organism is isolated from a hydrothermal vent, where it has been observed to be thriving. Based on your knowledge of the plasma membrane, you would expect to find a predominance of
A) largely saturated fatty acids. B) equal amounts of saturated and unsaturated fatty acids, as long as the chain was close to 12 carbons in length. C) polar fatty acids. D) largely unsaturated fatty acids. E) none of the above
Glucosylation of hydroxymethylcytosine residues protects phage T4 DNA from cleavage by bacterial restriction enzymes.
Answer the following statement true (T) or false (F)
What is recombination frequency?
What will be an ideal response?
The carrying capacity for a plant species can decrease when ______.
A. natural selection occurs B. germination starts too early C. plants evolve a quick-growing trait D. the population of pollinators increase E. soil nutrients are become depleted