Breeding a yellow dog with a brown dog produced puppies with both yellow and brown hairs intermixed. This is an

example of:
a. variegation.
b. codominance.
c. incomplete dominance.
d. epistasis.
e. a polygenic trait.


b

Biology & Microbiology

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Which reaction is endergonic?

a. protein synthesis b. digestion c. fire d. respiration e. movement

Biology & Microbiology

As compared to the circulatory system of most fishes, the circulatory system of adult amphibians has the advantage of  

A.  a four-chambered heart. B.  complete separation between oxygenated and deoxygenated blood. C.  partially-separate circuits for gas exchange and systemic delivery of blood. D.  a pocket of the gut that serves as an air bladder. E.  a single circuit.

Biology & Microbiology

Enzyme specificity refers to the

a. specific name of each kind of enzyme. b. fact that enzymes catalyze one particular substrate or a small number of structurally similar substrates. c. effect of temperature on enzyme activity. d. effect of pH on enzyme activity.

Biology & Microbiology

During the M checkpoint, the cell ____

a. proceeds to interphase and completes DNA replication b. proceeds to G2 phase and the cell prepares to divide c. proceeds to S phase or enters inactive G0 state d. monitors attachment of spindle fibers to chromosomes e. monitors completion of DNA synthesis and DNA damage

Biology & Microbiology