What disaccharide comprises glucose and galactose?
a. adipose
b. lactose
c. sucrose
d. galactose
e. fructose
Answer: b. lactose
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When is a test-cross used?
A. To determine the genes in a dominant organism B. To determine the genes in a codominant organism C. To determine the genes in a recessive organism
Consider a cross to investigate the pea pod texture trait, involving constricted or inflated pods. Mendel found that the traits behave according to a dominant/recessive pattern in which inflated pods were dominant. If you performed this cross and obtained 650 inflated-pod plants in the F2 generation, approximately how many constricted-pod plants would you expect to have?
A. 600 B. 165 C. 217 D. 468
The scientific method has limitations. It can only answer objective questions based on quantitative facts from observable, measurable, and repeatable experiments. It cannot answer subjective questions based on qualitative beliefs or opinions such as the presence of deities and ghosts or who makes the best doughnut. Could the scientific method theoretically be used to answer the question, "Does throwing a virgin into a volcano prevent it from erupting?" Support your answer.
What will be an ideal response?
Inserting a kanamycin resistance cassette into a catabolic operon to confirm the gene is essential in degradation of a particular compound would involve all of the following EXCEPT
A) a reporter gene. B) ligation. C) recombination. D) transformation.