When scientists inserted the Bt toxin gene into plant cells they created a
A. transgenic plant.
B. stem cell.
C. new species.
D. clone.
E. monohybrid.
A. transgenic plant.
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In humans, male-pattern baldness may be assumed to be controlled by an autosomal gene that occurs in two allelic forms. Allele B determines nonbaldness, and allele b determines pattern baldness. In males, because of the presence of testosterone, allele b
is dominant over B. If a man and woman both with genotype Bb have a son, what is the chance that he will eventually be bald? A) 0% B) 25% C) 33% D) 50% E) 75%
What are two organ systems that are not always found in animals?
What will be an ideal response?
Describe the benefits of self-incompatibility and self-compatibility
What will be an ideal response?
Which of the following is typical of interphase?
A. DNA replicates. B. The chromosomes get short and thick. C. The nucleolus disappears. D. The cell does nothing.