A reciprocal exchange in which a pair of DNA with the same nucleotide sequence break and rejoin in a crossover is called ________ recombination.
A. site-specific
B. replicative
C. homologous
D. None of the choices are correct.
Answer: C
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Given the plant species' name Claytonia virginica, what might you surmise about it?
a. It was named in honor of somebody named Clayton and was found it in Virginia. b. It grows on clay soils in virgin forests. c. It was described and named by someone named Clayton d. It is related to Ostrya virginiana. e. Absolutely nothing.
The chromosomal structure that anchors the spindle fiber to the chromosome is
____________________. What will be an ideal response?
Vaccinations against chicken pox provide individuals with ____ immunity
a. active natural b. active artificial c. passive natural d. passive artificial e. cell-mediated
What strategies are employed in habitat conservation? Select all that apply.
A. ecosystem replacement B. identifying areas rich in endemic species C. rehabilitation of previously damaged areas D. identifying representative habitats E. establishing a captive breeding program