If black fur color is controlled by a dominant allele (B) and brown by its recessive allele (b), give the
genotypes of the parents and offspring of a cross of a black male with a brown female that produces
1/2 black offspring and 1/2 brown offspring. What will be an ideal response?
Black male (Bb) ? brown female (bb)
offspring: black (Bb) brown (bb)
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What are the two important symbiotic relationships involving plant roots?
What will be an ideal response?
Unrelated species living in geographically separated parts of a biome may resemble one another as a result of
a. competitive interactions b. morphological convergence c. morphological divergence d. coevolution
Which of the following statements is false?
a. Neurons in the brain can interpret incoming action potentials only in certain ways. b. Optic nerve impulses can only be interpreted as light. c. Some sensory receptors do not convert a stimulus to nerve impulses. d. The stronger the stimulus, the more action potentials are generated. e. A strong stimulus activates many adjacent receptors, thereby increasing the number of action potentials and the level of awareness for the stimulus.
small openings where CO2 enters the leaf
What will be an ideal response?