What are the two major types of chromosomes in many eukaryotic organisms?
a. sex and non-sex
b. XY and ZZ
c. sex and autosomes
d. autosomes and ZZ
Ans: c. sex and autosomes
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Speciation due to genetic drift is typically a very ____ process
A. rapid B. slow C. convergent D. dispersive
This region exhibits 90% interference. How many double crossovers would be recovered in a three-point cross involving b, c, and sp out of 1000 progeny?
In Drosophila, the genes b, c, and sp are linked and arranged as shown below: b——30 m.u.——c——20 m.u.——sp A) 3 B) 6 C) 54 D) 60 E) 600
Photosynthesis first occurs on Earth by about
___ years ago.
a. 4.6 billion b. 3.5 billion c. 2.7 billion d. 1.1 billion e. 0.5 billion
If you are stranded on a desert island, which prey should you avoid consuming?
A) fast mobile prey B) large prey C) cryptic prey D) brightly colored prey