Define Mendel's law of independent assortment
A) The inheritance of one character has no effect on the inheritance of another character.
B) Segregation of homologous chromosomes is random.
C) The expression of one gene has no effect on the expression of another gene.
D) There are two versions of each trait, a dominant and a recessive; the one you get is random.
A
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When gibberellin binds to its receptor, what happens to activate the gibberellin-dependent transcription factor GA-TRXN?
A. Ethylene is released. B. A ubiquitin tag is used to degrade the GA-TRXN inhibitor. C. A DELLA protein is degraded, freeing the GA-TRXN. D. A DELLA protein is attached to GA-TRXN to activate it. E. The gibberellin is transferred to an alternate binding site.
The probability that a boy whose mother is heterozygous for an X-linked trait inherits the recessive allele is
A) 1/16. B) 1/8. C) 1/4. D) 1/2.
Which hormone stimulates both leaf abscission and fruit ripening?
a. abscisic acid b. auxin c. cytokinin d. ethylene e. gibberellin
Which of the following is NOT an example of how tumors evolve?
A) Tumor cells can spread throughout the body. B) Tumor cells show genetic variability. C) Tumor cells grow uncontrollably. D) Tumor cells pass on mutations when they divide.