Short index fingers (shorter than the ring finger) are dominant in males and recessive in females, whereas long index
fingers (as long as or longer than ring fingers) are dominant in females and recessive in males. Give the F2 genotype and
phenotype resulting from the cross of a male with long index fingers with a female with short index fingers. What will be an ideal response?
ANSWER: F2: 3/4 males with short fingers, 1/4 males with long fingers F2: 3/4 females with long
fingers, 1/4 females with short fingers
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Sulfate-reducing bacteria (SRB) are very important in the cycling of sulfur within ecosystems because significant amounts of sulfate are present in almost all aquatic and terrestrial habitats, making SRB widespread and active.
Answer the following statement true (T) or false (F)
Which of the following supports the accuracy of the Punnett square?
a. law of segregation b. law of dominance c. law of dependent assortment d. law of incomplete dominance
Aniridia is a human condition in which the eye has no iris. The protein encoded by the gene responsible for aniridia is very nearly identical to the protein product of the fly Eyeless protein
What experiment could provide evidence that the two genes are functionally equivalent? A) Introduce the aniridia mutation into Drosophila embryos to look for iris formation. B) Sequence the Eyeless and aniridia DNA sequences and regulators. C) Use the Eyeless mRNA as a probe in other invertebrate and non-mammalian species. D) Introduce the mouse aniridia wild-type sequence into the fly egg to see whether mouse eyes develop. E) Introduce the mouse aniridia wild-type sequence into the fly egg to see whether fly eyes develop.
Name three modes of inheritance that are influenced by the sex of individuals
What will be an ideal response?