The most important molecule(s) in the world is(are)
A. water.
B. protein.
C. carbohydrates.
D. nucleic acids.
A
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Epigenetic inheritance may depend on all the following except:
A. the DNA sequence from a parent. B. inherited chemical modification of parental nucleotides. C. inherited nucleosome structure of chromosome. D. inherited chemical modification of parental proteins.
Which of the following individuals would be
considered a carrier of a sex-linked recessive defect? a. a man with the defect b. a woman with the defect c. a father of a son with the defect d. the normal daughter whose father had the defect e. a son of two unaffected parents
Penetrance specifically refers to the expression of lethal genes in heterozygotes
Indicate whether the statement is true or false
Bacteria isolated from Lake Natron, where the water pH is close to 10, are which of the following?
A. alkaliphiles B. facultative anaerobes C. neutrophiles D. obligate anaerobes