A molecule or anything else that transports new genes into a cell is called a
a. vector.
b. plasmid.
c. restriction enzyme.
d. bacterium.
d
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Which of the following is a true statement regarding mitosis?
(A) Replication of chromosomes occurs at the start of mitosis (B) Cytokinesis precedes alignment of replicated chromosomes along the equatorial plate (C) Replicated chromosomes pairs up in tetras prior to separation of chromatids (D) Mitosis plays a role in growth, repair, and asexual reproduction
Which of the following traits determines recombination frequency between two linked genes?
a. the relative sizes of the two chromosomes that each have one of the two genes b. the distance between the two genes on a single chromosome c. the distance between the two chromosomes that each have one of the two genes d. the overall size of the chromosome on which the genes are located
How are some plant viroids and virusoids similar to Tetrahymena group I introns?
What will be an ideal response?
Bilateria are characterized by
A. a plane of symmetry that forms mirror images around any plane through the longitudinal midline of the body. B. a plane of symmetry around a transverse plane across the center of the body so that the front and back halves are mirror images. C. a plane of symmetry that forms mirror images around a vertical plane in the midline. D. a plane of symmetry that forms mirror images around an oblique plane in the midline. E. a plane of symmetry that forms mirror images around a horizontal plane in the midline.