In pea plants, round peas are dominant (R) and shriveled peas are recessive (r), and yellow peas (shown as light gray in the Punnett square) are dominant (Y) and green peas (dark gray) are recessive (y). Using this information and the partial Punnett
square shown, what were the phenotypes of the parental plants that were used in this cross by Mendel?
A) Rryy and RrYy
B) Rryy and rrYy
C) RRyy and rryy
D) RrYy and RrYy
Answer: A
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What will be an ideal response?
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a. true b. false
What is the name of the process of selecting a specific group of organisms from an initially heterogeneous population for future breeding purposes?
What will be an ideal response?
How does position effect influence gene expression?
A. Point mutations in promoters frequently occur by this mechanism B. Translocations may result in a promoter that is normally used for one gene now controlling an entirely different gene C. Since this mechanism relies on recombination it relies on the positioning of one allele so that it is under the control of the other allele. D. Translocations always result in a gene being recombined into an area of heterochromatin.