Chapter 13: Q. 6 (page 343)
Which recombination frequency corresponds to independent assortment and the absence of linkage?
a. 0
b. 0.25
c. 0.50
d. 0.75
Short Answer
The Correct answer is C.
Chapter 13: Q. 6 (page 343)
Which recombination frequency corresponds to independent assortment and the absence of linkage?
a. 0
b. 0.25
c. 0.50
d. 0.75
The Correct answer is C.
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Get started for freeX-linked recessive traits in humans (or in Drosophila) are observed ________.
a. in more males than females
b. in more females than males
c. in males and females equally
d. in different distributions depending on the trait
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?
Abnormalities in the number of X chromosomes tends to have milder phenotypic effects than the same abnormalities in autosomes because of _______
a. deletions
b. nonhomologous recombination
c. synapsis
d. X inactivation
The first suggestion that chromosomes may physically exchange segments came from the microscopic identification of ________.
a. synapsis
b. sister chromatids
c. chiasmata
d. alleles
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.
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