In regard to the baby's colorblindness, a sex-linked recessive trait, you explain that
A) colorblindness often appears randomly, even if neither parent is colorblind.
B) the baby's father must have a recessive allele for colorblindness.
C) since colorblindness is sex-linked, a son can inherit colorblindness if his mother has the recessive colorblindness allele.
D) the eggs must have been accidentally switched, since males inherit sex-linked traits only from their fathers.
Answer: C
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Indicate whether the statement is true or false
Gram-positive cocci in clusters were reported on preliminary direct Gram staining from a sputum specimen. The patient was treated with antibiotics. Following 48 hours of treatment, a secondary specimen was reported as gram-positive rods. The discrepancy in this result is:
a. the patient likely obtained a secondary infection following treatment of the first pathogen. b. the antibiotics are effective and the gram-positive cocci are distorted due to inhibition of growth by the antibiotic. c. the first preliminary Gram stain was erro-neous, and should have been reported as normal microbiota. d. there is no discrepancy.
The cell membrane's mix of lipids and proteins is referred to as a
a. mixture. b. mosaic. c. compound. d. complex. e. suspension.
Feather color in budgies is determined by two different genes Y and B. YYBB, YyBB, or YYBb is green; yyBB or yyBb is blue; YYbb or Yybb is yellow; and yybb is white.Two blue budgies were crossed. Over the years, they produced 22 offspring, 5 of which were white. What are the most likely genotypes for the two blue budgies?
A) yyBB and yyBB B) yyBB and yyBb C) yyBb and yyBb D) yyBB and yybb E) yyBb and yybb