The presence of a beard on some goats is determined by an autosomal gene that is dominant in males and recessive in females. Heterozygous males are bearded, while heterozygous females are beardless. What type of inheritance is exhibited by this trait?
A. autosomal dominant
B. sex-linked
C. autosomal recessive
D. sex-limited
E. sex-influenced
Ans: E. sex-influenced
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a. cnidarians c. annelids b. echinoderms d. placozoans
Recombination analysis allows for the mapping of genes because the frequency of crossing over is proportional to what distance?
What will be an ideal response?
Cellular wastes and excess ions are moved from the blood into nephrons by
A) reabsorption only. B) filtration only. C) secretion only. D) filtration and secretion. E) filtration and reabsorption.
Which of the following molecules is produced in the intermediate step between glycolysis and the Krebs cycle?
A) citric acid B) acetyl CoA C) ATP D) oxaloacetate E) pyruvic acid