A variation in the pattern of nucleotides that often contributes to genetic anomalies is called a(n) ________.

A. short interspersed nuclear element
B. genetic marker
C. restriction enzyme
D. DNA microarray


Answer: B

Biology & Microbiology

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Which of the following is not a mechanism by which viruses cause cancer?

A. An expression of viral proteins results in abnormal expression of genes that regulate cell growth and reproduction. B. They carry a cancer-causing gene into the cell. C. They encode proteins that bind to and inactivate host cell proteins known as tumor suppressor proteins. D. They produce defective interfering particles.

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Charles Darwin is best known for developing ________

a. the theory of blending inheritance b. improved varieties of fruits and vegetables c. the chromosome theory of inheritance d. the theory of natural selection

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Often in complete dominance, the recessive allele codes for a nonfunctional ________

Fill in the blank(s) with correct word

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In addition to opposable thumbs, which is another feature of primates adapted to living in a arboreal environment?

a. claws b. short limbs c. small brains d. stereoscopic vision e. tough epidermal layer

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