All living organisms respond and adjust to their environments. The process through which this occurs is called
A. photosynthesis.
B. metabolism.
C. adaptation.
D. growth and development.
E. genomics.
C. adaptation.
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The dominant Huntington disease allele causes severe neural/brain damage at approximately age 40. A female whose mother has Huntington disease marries a male whose parents are normal. It is not known if the female has the disease. Keeping in mind that the disease allele is rare in the population, what is the probability that their firstborn will inherit the gene that causes Huntington disease?
A) 25% B) 50% C) 75% D) 100% E) 0%
Which of the following statements about Chlamydia is incorrect?
A. Reticulate bodies differentiate into elementary bodies. B. It is an obligate parasite that needs host cells for growth. C. It is gram-negative. D. Elementary bodies are the infectious form. E. Elementary bodies lack enzyme systems for making ATP.
The allele that causes Huntington's disease is expressed earlier in life when it is inherited from the father than when it is inherited from the mother. Huntington's disease is an example of
A. an X-linked trait. B. pleiotropy. C. gene imprinting. D. linkage.
Distances between linked genes in centimorgans (cM) can be converted directly to the physical distances between them on the chromosome
a. True b. False Indicate whether the statement is true or false