Red-green color blindness is a sex-linked trait. A woman with normal color vision, whose father was color blind, mates with a color blind man. What chance do each of their sons have of being color blind?
A. 100% chance
B. 10% chance
C. 0% chance
D. 50% chance
Answer: D
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The occurrence of human identical twins is evidence that:a
all human cells are totipotent. b. no human totipotent cells have been identified. c. the only totitpotent human cell is the one-cell embryo. d. cells in a two-cell human embryo are totipotent. e. cells in a two-cell human embryo are pluripotent.
Weak bonds that form between water molecules or between the nucleotide bases of two strands of DNA are called ______ bonds
covalent compound hydrogen ionic
Which of these is not a function of proteins?
A) They help fight infection. B) They form structural features, such as hair and bone. C) They transport molecules within cells and throughout the body. D) They are a chief form of long-term energy storage. E) They help catalyze chemical reactions.
Regarding temperature, most pathogens are:
What will be an ideal response?