The structure labeled "D" in this figure of a replication fork represents ____
a. single-stranded binding protein
b. primase
c. DNA ligase
d. helicase
e. DNA polymerase
A
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Which molecules are essential components of tight junctions?
A. cadherins and connexins B. cadherins and integrins C. claudins and integrins D. cadherins and claudins E. connexins and claudins
According to the chromosome theory of inheritance, ____
a. genes on chromosomes always assort independently b. paternal chromosomes determine the offspring’s phenotype c. maternal chromosomes determine the offspring’s phenotype d. genes and their alleles are carried on chromosomes e. genes are carried on chromosomes and alleles are the product of gene expression
A species' biotic potential is intrinsically determined by all of the following EXCEPT which one?
A) the number of members of reproductive age B) the number of offspring produced by each reproducing member C) the time span before offspring reach reproductive maturity D) the ratio of males to females E) the presence of competing species in the same habitat
Cosmid cloning vectors accommodate much larger fragments of DNA than bacterial artificial chromosomes
__________________ Indicate whether the statement is true or false.