Less than ______% of all microbial species have been cultured, identified, and studied.
A. 10
B. 2
C. 1
D. 5
Answer: C
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Red-green color blindness is a sex-linked trait. A woman with normal color vision, whose father was color blind, mates with a color blind man. What chance do each of their sons have of being color blind?
A. 100% chance B. 10% chance C. 0% chance D. 50% chance
Sea stars are primarily:a
herbivores. b. omnivores. c. carnivores. d. detritivores. e. saprophytes.
In gel electrophoresis, DNA is separated based on charge and ________
Fill in the blank(s) with correct word
In a large population of plants, notches in the leaves are caused by a dominant allele N and lack of notches by a recessive allele n. Over many generations the proportion of plants in the population with notched leaves increases. What is the most likely
cause? A) Dominant alleles generally increase in frequency over time. B) The recessive alleles were all masked by the dominant alleles. C) Directional selection favored plants with notched leaves. D) Genetic drift caused a steady movement toward a greater proportion of plants with notched leaves.