Steven has the dominant tongue rolling phenotype but he does not know his genotype. His wife has the recessive non-tongue rolling trait. If their son can roll his tongue this means ________
A) Steven has a homozygous recessive genotype
B) Steven has a heterozygous genotype
C) Steven has a homozygous dominant genotype
D) that it is impossible to tell Steven's genotype from this information alone
D
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Which bones are thin and typically found where there is a need for extensive muscle attachment or protection for soft or vital parts of the body?
a. long b. flat c. short d. irregular
Some pediatricians recommend using a 10 percent salt solution to relieve nasal congestion in infants. Explain the effects this treatment would have on the cells lining the nasal cavity. Would it be effective?
What will be an ideal response?
Identify the protein-hydrolyzing enzymes in the digestive tract, and name their sources. Why are these enzymes released in an inactive form?
What will be an ideal response
According to the sliding filament mechanism of muscle contraction, the thick filaments slide in closer together to shorten the sarcomere
Indicate whether the statement is true or false