An organism that is heterozygous for two traits can produce a maximum of _______ different gametes for these traits.
A. 2
B. 4
C. 2; if they are on the same chromosome
D. 4; only if they are on different chromosomes
E. 8
B. 4
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In the axoneme, sidearms
A) are incomplete microtubules. B) slide microtubules past one another. C) project inward at each doublet. D) link adjacent doublets. E) are complete microtubules.
Serious detrimental effects of global warming include all of the following EXCEPT ____
a. intense rains and flooding b. more frequent and intense droughts c. rising sea levels in coastal areas d. the disappearance of glaciers thus wiping out some fresh water supplies e. more open shipping channels in the Arctic
In cells, endergonic reactions are often coupled with exergonic reactions that store energy
Indicate whether the statement is true or false
Which types of phenotypic ratios are likely to occur in crosses when dealing with three gene pairs for which all the genotypic combinations are of equal viability?
A) 12:3:1, 9:7 B) 1:2:1, 3:1 C) 2:3, 1:2 D) 1:4:6:4:1, 1:1:1:1 E) 27:9:9:9:3:3:3:1