In humans, assume that the allele for brown eyes is dominant and the allele for blue eyes is recessive. If two browneyed
individuals have a child with blue eyes, that means:a.
both parents are homozygous for brown eyes.
b. both parents are heterozygous for eye color.
c. there is a 1/4 chance that their second child will have brown eyes.
d. there is a 1/2 chance that their second child will have blue eyes.
e. there is a 3/4 chance that their second child will have blue eyes
b
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The HbS allele that causes sickle-cell anemia
in the recessive condition is most common in areas that experience a high frequency of
a. polio. b. typhus. c. diphtheria. d. malaria. e. cystic fibrosis
In the accompanying diagram, ____ represents the beginning of chemical digestion
a. A b. E c. D d. H e. I
In skeletal and cardiac muscles, relaxation occurs as ________ ions are pumped back into the sarcoplasmic reticulum
A) potassium B) sodium C) chloride D) calcium
Korarchaeum cryptofilum's lifestyle is based on
a. aerobic respiration. b. anaerobic respiration. c. fermentation. d. photosynthesis.