In the garden peas example above, a tall plant with white flowers crossed with a dwarf plant with
purple flowers produces 1/4 tall purple flowers, 1/4 tall white flowers, 1/4 dwarf purple flowers, and
1/4 dwarf white flowers. What is the genotype of the parents? What will be an ideal response?
Dd pp ? dd Pp
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What do Margalef's and Menhinick's indices have in common?
A) Both indices are measures of heterogeneity. B) Both indices normalize species richness in relation to the size of the sample. C) Both indices normalize species richness in relation to latitude. D) Both indices quantify the compositional similarity of two samples. E) Both indices were used by Darwin, Bates, and Wallace to quantify tropical diversity.
If the partial pressure of oxygen (pO2) in a man's blood plasma decreased below that in his red blood cells, what would be the result?
A. More oxygen would diffuse into his red
blood cells and be transported throughout his
body.
B. Oxygen would diffuse out of his red blood
cells, and less oxygen would be transported
throughout his body.
C. The concentration of oxygen would be the
same in red blood cells and blood plasma.
Which of the following is paired INCORRECTLY?
A) plants; cellulose cell wall B) algae; glycocalyx C) bacteria; peptidoglycan cell wall D) fungi; polysaccharide cell wall E) archaea; protein cell wall
In the presence of penicillin, a cell dies because
A) it lacks a cell wall. B) it plasmolyzes. C) it undergoes lysis. D) it lacks a cell membrane. E) its contents leak out.