Which of the following is not a set of master regulatory genes that control homeobox genes during development?
A) Polycomb B) Hox C) CURLY LEAF
Answer: B
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Which of the following is not a component of a nucleotide?
A. a five-carbon sugar B. one or more phosphate groups C. a nitrogen-containing base D. a carboxyl group E. a five-carbon sugar, one or more phosphate groups, a nitrogen-containing base and a carboxyl group are all components of nucleotides.
Select the diseases that are caused by apicomplexans.
A. Giardiasis B. Cryptosporidiosis C. Malaria D. Trypanosomiasis E. Lyme disease
When chromosomes fail to separate at either the first or second meiotic division this
A. is known as crossing over. B. results in a sperm or egg cell with an abnormal number of chromosomes. C. is known as translocation. D. results in a failure to produce gametes. E. results in arrest during meiosis.
Simple goiter can be prevented by
A. administration of insulin. B. administration of ACTH. C. surgery to remove the thyroid gland. D. increasing intake of iodine in the diet. E. removal of the pituitary.