Two kinds of mice live in the same area but one is black and the other is brown. Which of the following questions would be most valuable in determining if they are of the same species?
A. Do members of the two kinds mate with one another and have offspring that reproduce?
B. Do the two kinds have other physical differences other than color?
C. Are the brown mice eaten more often by owls than black mice?
D. Do the brown mice climb trees more often than black mice?
A. Do members of the two kinds mate with one another and have offspring that reproduce?
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Answer the following statements true (T) or false (F)
1. RNA polymerase can bind to the promoter region of the DNA even when the lac repressor is bound to the operator site. 2. Both eukaryotes and prokaryotes require a promoter region for gene transcription. 3. A cis-effect is a form of gene regulation that can occur between two DNA segments that are not physically adjacent. 4. Eukaryotic genes are almost always organized in groups, similar to operons in prokaryotes.
Describe how NO3-is transported into a plant cell
What will be an ideal response?
Clear evidence of bipedalism in human ancestors is demonstrated by "Lucy," an individual who lived about ____
million years ago. a. two b. four c. six d. eight
e. tenCertain mobile Group I introns encode
a. reverse transcriptase. b. an endonuclease. c. DNA repair enzymes. d. an RNA-dependent DNA polymerase. e. an exonuclease.