Two pure-breeding phlox plants were crossed, one with dark-blue flowers and the other with pink flowers. The F1 generation all had dark-blue flowers. When the F1 were crossed with each other, the F2 generation consisted of 176 plants: 101 with dark-blue flowers, 33 with light-blue flowers, 30 with red flowers, and 10 with pink flowers. What progeny types would result from crossing a homozygous plant with light-blue flowers to a homozygous plant with red flowers?
A) all would be dark blue
B) all would be red
C) 1 light blue : 1 red
D) 9 dark blue : 3 light blue : 3 red : 1 pink
A) all would be dark blue
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Normal bacterial inhabitants of the human body
a. are naturally resistant to antibiotics. b. are able to out-compete some invading pathogens and thus are one of the body's initial defense mechanisms. c. can be transformed into pathogenic forms if a person's resistance to disease is low. d. are unable to survive the human body's defense mechanisms. e. are able to out-compete some invading pathogens and thus are part of the body's innate immunity
Hydrochloric acid in the stomach aids in
a. digestion of fats. b. digestion of proteins. c. digestion of carbohydrates. d. production of leptin. e. destruction of microbes in food and digestion of proteins.
In 1996, a cloning experiment produced the sheep named Dolly. Contrary to the more traditional method of cloning by embryo splitting, Dolly was produced by which procedure?
What will be an ideal response?
Where in a cell does glycolysis occur?
A. Cytoplasm B. Golgi body C. Nucleoid D. Mitochondrion E. Rough endoplasmic reticulum