Which type of mutation is least likely to revert?
A) deletion
B) transition
C) transversion
D) insertion
E) All are equally likely.
A) deletion
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Smells and food aromas often produce an intense emotional impact. What is the biological basis of this response?
What will be an ideal response?
In Down syndrome,
a. as the age of the mother increases, the chance of the defect occurring in the unborn children increases. b. the age of the father usually has an equal influence on the defect. c. most embryos abort before complete term. d. a person with the defect cannot have a normal child. e. 80% of trisomic 21 babies are born to women over the age of 40.
Place the structures in the correct order that light would pass through them before reaching the retina.
a. Cornea, b. Aqueous Humor, Lens c. Viterous Humor d. all of the above
Which is a disadvantage associated with asexual reproduction?
a. Decreased genetic diversity relative to sexual reproduction. b. Increased recombination rate relative to sexual reproduction. c. Excessive numbers of offspring relative to sexual reproduction. d. Excessive diversity of offspring phenotypes