A cross of two Kerry horses always produces Kerry. A cross of a Kerry with a Dexter produces 1/2
and 1/2. Crosses of two Dexters produce two Dexters for every Kerry. Explain. What will be an ideal response?
Kerry is homozygous (DD), Dexter is heterozygous (Dd), dd is lethal.
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Lactose intolerance is caused by a(n) ____
a. nucleotide substitution that prevents lactose production b. variant manifestation of galactosemia c. accumulation of galactose-1-phosphate d. inability to digest lactose e. excess in lactose production
The three main forms of nitrogenous wastes found in animals are
A. ammonia, urea, and uric acid. B. ammonia, urea, and uracil. C. ammonia, urea, and amino acids. D. uracil, urea, and uric acid. E. amino acids, uracil, and uric acid.
Bacillary dysentery is caused by
a) Staphylococcus. b) Shigella. c) Salmonella d) Clostridium.
The development of new technologies is based upon science.
a. true b. false