In cocker spaniels, black coat color (B) is dominant over red (b), and solid color (S) is dominant over
spotted (s). If a red, spotted male was crossed with a black, solid female and all the offspring from
several crosses expressed only the dominant traits, the genotype of the female would be
a. BB SS.
b. Bb SS.
c. Bb Ss.
d. BB Ss.
e. none of these.
A
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Paedomorphosis is
A. the formation of limbs from fins in the evolution of land vertebrates. B. the change from radial to bilateral symmetry in the evolution of plants and animals. C. the retention of juvenile traits in an adult organism. D. an earlier development of adult traits in an organism. E. the development of different types of eyes from a simpler form.
Why is oil not degraded when in a natural habitat underground, yet susceptible to bioremediation in an oil spill?
A. The high pressure the oil is subjected to underground prevents bacteria from growing and consuming it. B. The bacteria can't be given the right amounts or types of nutrients to foster an increase in their number deep underground. Nearer the surface, human intervention can increase the factors that will raise the microbe quantity. C. The bacteria that degrade the oil require a higher than normal salt content, much like what is found in seawater. Underground, they lack this salt level. D. It IS degraded underground-but it happens at a much slower rate because a portion of the cycle is photosynthetic in nature. This process is dramatically increased nearer to the water's surface.
The chromosome theory of inheritance sought to explain Mendelian patterns in terms of chromosome movement. Can you think of an experimental approach to test for the Mendelian principle of segregation using chromosomes?
What will be an ideal response?
Which statement about enzymes is not true?
A.) enzymes can help build large polymers B.) enzymes reduce the activation energy required to initiate a spontaneous reaction C.) an enzyme can force an energetically unfavorable reaction to take place inside the cell D.) enzymes can speed up energetically favorable reactions