The distances between gene loci measured in terms of the frequency of recombination is indicated by a genetic ________.
A. profile
B. map
C. clone
D. karyotype
E. pedigree
Answer: B
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Alcohol can be absorbed by the stomach.
Indicate whether the statement is true or false.
The polytene chromosomes of certain insect larvae
churn out copious amounts of gene products because a. they are acetylated. b. they are methylated. c. they contain numerous side-by-side copies of genes. d. they have multiple promoter sites. e. their histones are only loosely associated with the DNA molecules.
Key sequences exist within promoters, which vary somewhat among various promoters but are sufficiently constant that they can be represented by a sequence of bases most often found at each position. These representations are called ________ sequences.
A. common B. idealized C. consensus D. convergence
This is not an obligatory step for bacteria to establish infection inside the host
A. attach to the host B. Producing symptoms C. multiply (grow) in the host D. enter the host E. exit from the host after infection