In the sweet pea crossing experiment by Bateson and Punnet, the F2 generation had many more offspring with the phenotypes of purple flowers P, long pollen L and red flowers p, round pollen l than expected from independent assortment. This is because
A. In these sweet peas, there are always more PL gametes than there are pl gametes.
B. In sweet peas, the alleles for flower color and pollen shape are on the same chromosome.
C. There were few recombination events between these genes during meiosis.
D. Flower color and pollen shape are within the same linkage group.
E. All of these are correct.
E. All of these are correct.
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According to Hamilton's rule, _____
A) natural selection does not favor altruistic behavior that causes the death of the altruist B) natural selection favors altruistic acts when the resulting benefit to the beneficiary, corrected for relatedness, exceeds the cost to the altruist C) natural selection is more likely to favor altruistic behavior that benefits an offspring than altruistic behavior that benefits a sibling D) the effects of kin selection are larger than the effects of direct natural selection on individuals E) altruism is always reciprocal
Ribotyping
A) bypasses sequencing and sequence alignments. B) exploits unique DNA restriction patterns. C) allows discrimination between species and different strains of a species. D) bypasses sequencing and sequence alignments, exploits unique DNA restriction patterns, and allows discrimination between species and different strains of a species.
All of the following statements about cellulose are true EXCEPT:
A. Cellulose is composed of fibers of carbohydrates. B. Cellulose is an important source of plant fiber for our diet. C. Cellulose is the primary molecule found in wood. D. Cellulose is one of the most abundant organic molecules on Earth. E. Certain animals like ourselves can easily digest cellulose and use it as a source of energy.
What are microtubules
Fill in the blank(s) with the appropriate word(s).