Commercially available powders that are used to help cuttings take root contain ________
a. gibberellins
b. cytokinins
c. auxins
d. ABA
c
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____________________ are mutations involving the increase of the number of repeat sequences in genes
Fill in the blank(s) with correct word
The probability that the daughter of a woman with a dominant disease-causing allele on one X chromosome and a normal male will be affected with the disorder is
A) 2/3. B) 1/2. C) 3/16. D) 1/3.
The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is
____.
a. 0% b. 25% c. 50% d. 75%
e. 100%Two small, poorly drained lakes lie close to each other in a northern forest. The basins of both lakes are composed of the same geologic substratum. One lake is surrounded by a dense Sphagnum mat; the other is not
Compared to the pond with Sphagnum, the pond lacking the moss mat should have _____. A) lower numbers of bacteria B) reduced rates of decomposition C) reduced oxygen content D) less-acidic water