Which of the following statements concerning the inheritance of a dominant trait is true?
A) Every affected person must have at least one affected parent.
B) The trait is observed to skip generations.
C) An affected heterozygote will transmit the allele to all of his or her offspring.
D) Nonaffected parents can have affected offspring.
E) The trait is passed along paternal lines.
A
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Before the invention of modern abrasive cleansers, which feature of horsetails was used by humans to scrub pots and
polish metals?
a. waxy spores b. silica-rich leaves c. lignin-rich leaves d. cones at the tips of their stems e. silica-rich stems
The ____ of the human digestive tract can be classified as endocrine glands since they produce hormones
a. liver and gallbladder b. liver and pancreas c. liver and small intestine d. pancreas and small intestine e. pancreas and stomach
Gs? activates ________
Fill in the blank with correct word.
Which of the following refers to the term metabolism?
A) all the reactions in a cell or organism B) all the reactions in a cell that break down molecules only C) all the reactions in a cell that build new molecules only D) all the reactions in a cell that decompose molecules only