Which layer lacks blood vessels?
A) hypodermis
B) subcutaneous
C) epidermis
D) dermis
C
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Suppose after bacterial conjugation, the recipient cell contained the a and b genes. From this information, what can
you conclude?
a. The donor cell was unable to make contact with the recipient cell. b. The donor cell was F-. c. The donor cell produced an abnormal sex pilus. d. All of the genes could not fit through the sex pilus at one time. e. The sex pilus was broken before the rest of the genes could be transferred.
The basic unit of contraction in a muscle is the
a. myofibril. b. sarcomere. c. sliding filament. d. contractile vacuole. e. Z band.
Positional cloning is used to link the inheritance of a disease in a pedigree to the inheritance of _____
a. other diseases or conditions b. a specific blood type c. other genes whose loci were known d. marker sequences produced by restriction enzymes e. X-linked genes
Just deep to periosteum, but superficial to endosteum, these layers of lamellae extend around entire surface of diaphysis. Help long bone to resist twisting.
What will be an ideal response?