If the physical expression of a heterozygous individual is intermediate between those of the homozygotes, the alleles are ________
Fill in the blank(s) with correct word
codominant
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In which plant cell or tissue would the pressure component of water potential most often be negative?
A) leaf mesophyll cell B) stem xylem C) stem phloem D) root cortex cell E) root epidermis
Fitness is a measure of reproductive success. If an individual with genotype BB produces 6 offspring, and a heterozygous individual (Bb) produces 10 offspring, and a third individual with genotype bb produces 5 offspring, what is the fitness value for the individual with BB genotype?
A. 1.0. B. 0.5. C. 0.6. D. 0.4. E. 1.1
One of the reasons study of nitrogen use in plants is of special interest is because:
A. nitrogen is limited in our atmosphere. B. nitrogen in its atmospheric form is not useable by plants. C. nitrogen is often toxic to plants. D. none of the forms of nitrogen is easily absorbed by plants. E. nitrogen is not an essential element for plant growth.
A specialization of the stomach that aids in grinding for animals that lack teeth is the ____
a. crop b. rumen c. cloaca d. gizzard e. esophagus