Replication of a bacterial chromosome begins at a specific region called the ____
a. ter
b. replication fork
c. beg
d. ori
e. rep
ANSWER: d
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A triploid cell contains sets of three homologous chromosomes. If a cell of a usually diploid species with 42 chromosomes per cell is triploid, this cell would be expected to have which of the following?
A) 63 chromosomes in pairs B) 63 chromosomes in 21 sets of 3 C) 63 chromosomes, each with three chromatids D) 21 chromosome pairs and 21 unique chromosomes
Which of these membrane transport processes does not require membrane proteins?
A. osmosis B. facilitated diffusion C. active transport pumps D. endocytosis E. All of the answer choices are correct.
In the universal ABO blood grouping system, there are four phenotypes - A, B, AB, and O - which are determined by
three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____.
a. a polymorphism b. genetic drift c. the bottleneck effect d. a dimorphism e. the founder effect
Define the term fitness
What will be an ideal response?