Which nondisjunction disorder must be due to an event in sperm development: XO, XXX, XXY or XYY? What will be an ideal response?
ANSWER: Only XYY would definitely be due to sperm development event. In the other three, the
missing or extra X could be attributed to an error in egg development. However, the extra Y
in XYY could only come from the male and must be due to nondisjunction during sperm
development.
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What is the key concept addressed by the question?
What will be an ideal response?
In conifers, the time between pollination and
fertilization is a. just a few hours. b. about a day. c. about a month. d. about six months. e. a year or more
Prokaryotes reproduce asexually by the processes of binary fission, budding, and transformation
What phenomenon results from the runoff of fertilizers from agricultural and residential areas causing the aquatic algae in bodies of water to grow prolifically?
A) competitive exclusion B) habitat fragmentation C) eutrophication D) overexploitation