Sexual reproduction gave rise to complex life cycles seen in eukaryotic organisms
A. true
B. false
A
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Examine the graph below, which shows the distribution of the magnitude of gene effects for the different genes contributing to a complex trait. Which of the following statements accurately describes what the graph shows?
A. Most often, a single gene with a small effect has a large effect on a complex trait. B. Most genes that affect a complex trait have relatively large effects. C. Most often, multiple genes with large effects are the sole contributors to complex traits. D. It is easier to identify genes for a complex trait if you examine many genes with a lower magnitude of effect. E. Most genes that affect a complex trait have relatively small effects.
How are the membranes of animal cells in winter able to remain fluid when the weather becomes extremely cold?
a. The percentage of both unsaturated phospholipids and cholesterol increases. b. The percentage of saturated phospholipids in the membrane decreases. c. The percentage of unsaturated phospholipids in the membrane decreases. d. The percentage of cholesterol molecules in the membrane increases.
Genetic (screening/sequencing/cloning) can be used to detect mutant genes associated with genetic diseases in individuals before any clinical symptoms are noted
What will be an ideal response?
Chlamydiae can be transmitted by ALL of the following ways EXCEPT
a. airborne invasion of the respiratory system. b. transmission of the elementary bodies. c. arthropod vectors. d. sexual contact.