What structure holds the sister chromatids to the spindle fibers?
a. kinetochore
b. centromere
c. chromatin
d. cyclin
e. MPF
A
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Sieve tubes are different from vessel elements because they ____
a. do not have nuclei b. are not connected to each other c. are alive at maturity d. conduct minerals e. transport water
In Down syndrome
a. as the age of the mother increases, the chance of the defect occurring in the unborn children increases. b. the influence of the father on the defect is equal to that of the mother. c. most embryos abort before complete term. d. a person with the defect cannot have a normal child. e. none of these are true.
Explain how females with the chromosome constitution XXX are often fertile with normal intelligence and lead normal lives
What will be an ideal response?
True/False: If you graph the response of a drug versus its concentration, a safe drug would have a large space between the curves for the toxic dose and the effective dose of the drug.
What will be an ideal response?