The human ABO blood type system (Do not consider the Bombay phenotype) involves all of the following EXCEPT:

a) complete dominance
b) multiple alleles
c) co-dominance
d) polygenic inheritance


Ans: d) polygenic inheritance

Biology & Microbiology

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What component of a negative feedback mechanism does the brain or spinal cord represent?

a. response b. sensor c. integrator d. effector e. stimulus

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Color blindness is an X-linked trait in humans. If a

color-blind woman marries a man with normal vision, the children will be a. all color-blind daughters, but normal sons. b. all color-blind sons, but carrier daughters. c. all normal sons, but carrier daughters. d. all color-blind children. e. all normal children.

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Phenylketonuria (PKU) is caused by the absence of the enzyme phenylalanine hydroxylase, which catalyzes the first step of the pathway that breaks down the amino acid phenylalanine, a common component of dietary protein

Explain how environmental intervention is commonly practiced to prevent the development of this human autosomal recessive condition.

Biology & Microbiology

Which is the process by which a protein is constructed in the cytoplasm of eukaryotic cells?

A. translation B. transcription C. translocation D. transformation

Biology & Microbiology