In humans, colorblindness is a recessive, X-linked genetic disorder. What is the likelihood that the children of a woman heterozygous for colorblindness and a man with normal color vision will be colorblind?
A.) 0%
B.) 25%
C.) 50%
D.) 100%
Ans: B.) 25%
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Manufacturers make vegetable oils solid or semisolid at room temperature by _____.
A. adding hydrogen atoms to the double bonds in the fatty acid hydrocarbon chains B. removing hydrogen atoms and forming additional double bonds in the fatty acid hydrocarbon chains C. removing hydrogen atoms and forming additional single bonds in the fatty acid hydrocarbon chains D. adding hydrogen atoms to the single bonds of the fatty acid hydrocarbon chains E. none of the above
The Social Security fund is maintained by a federal tax on the earnings of employed people. Which group of workers should be encouraged to live temporarily in the country?
A) young unmarried males B) young married couples C) elderly females D) retired couples
major disease process seen in cirrhosis is
What will be an ideal response?
The diploid number of a roundworm species is 4. Assuming there is no crossover, and random segregation of homologues during meiosis, how many different possible combinations of chromosomes might there be in the offspring
(not including variety generated by crossing over)? A) 4 B) 8 C) 16 D) 64