Much has been written about p53 in terms of cancer biology. What is p53, and what is its significance?
What will be an ideal response?
Mutations in the p53 gene are important in the development of a number of cancers. It is a tumor-suppressor gene that normally functions to control the transition from late G1 to S phase. The product of p53 has DNA-binding properties.
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The specimen of choice to collect in suspected cases of Paragonimus infection is:
a. sputum. b. blood. c. urine. d. stool.
The breakdown of larger molecules into smaller ones
What will be an ideal response?
If a flower has sepals, petals, and stamens but lacks carpels, then that flower is:
a. complete and imperfect. b. complete and perfect. c. incomplete and perfect. d. incomplete and imperfect. e. almost complete and almost perfect.
Based on the classic experiments of Creighton and McClintock with maize, crossing over involves a physical exchange between chromatids. What particular chromosomal characteristic allowed their experiments to succeed?
A) colored bands along the lengths of a chromosome B) a chromosome with a unique cytological marker C) a missing chromosome D) an extra chromosome E) three chromosomes with identical structure