Answer: directional
Explanation:
Because only one trait was favored. When bears are cold, being bigger helps them better adapt to the coldness. Adjusting to the weather is one trait.
Your answer would be D, Photosynthesis
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The colony would have less genetic variation. The Bacteria in the colony would be too genetically similar
Answer:
She has two recessive color blindness alleles.
Explanation:
The expression of arecessive phenotype requires both X chromosomes of the female to each contain a recessive color blindness allele. This genotype would the determine the mother would be color blind.
Answer:
Enzymes speed up a chemical reaction making the reaction easier to occur.