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Chapter 13: Q. 1 (page 342)
Figure 13.3 In a test cross for two characteristics such as the one shown here, can the predicted frequency of recombinant offspring be 60 percent? Why or why not?
No.
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If the allele encoding polydactyly (six fingers) is
dominant why do most people have five fingers?
a. Genetic elements suppress the polydactyl gene.
b. Polydactyly is embryonic lethal.
c. The sixth finger is removed at birth.
d. The polydactyl allele is very rare in the human
population.
In agriculture, polyploid crops (like coffee, strawberries,or bananas) tend to produce ____.
a. more uniformity
b. more variety
c. larger yields
d. smaller yields
Assume a pericentric inversion occurred in one of two homologs prior to meiosis. The other homolog remains normal. During meiosis, what structure鈥攊f any鈥攚ould these homologs assume in order to pair accurately along their lengths?
a. V formation
b. cruciform
c. loop
d. pairing would not be possible
Determine whether the function is one-to-one.
The genotype XXY corresponds to
a. Klinefelter syndrome
b. Turner syndrome
c. Triplo-X
d. Jacob syndrome
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