2.5 points Save Answer QUESTION 1 Recessive mutations in either of two separate
ID: 195048 • Letter: 2
Question
2.5 points Save Answer QUESTION 1 Recessive mutations in either of two separate genes on different chromosomes, Q/q and R/r, lead to loss of red pigmentation in carnations to produce white flowers Two true-breeding white carnation plants were crossed and yielded carnations with red flowers. Those red carnations were selfed to yield progeny. What was the ratio of red: white progeny plants A. 9:7 D. 12:4 E. 15:1 2.5 points Save Answer QUESTION 2 Parents, AAbb and aaBB were crossed to yield AaBb females. Those AaBb females were crossed with aabb males What would be the frequency of AaBb progeny if the two genes were linked and there was no recombination between the two genes? A. 0.5625 C.0.38 D. 0.25 E. 0.0625 0.00 (none)Explanation / Answer
Answer.
1). C. 9:7
Explanation.
Q_R_ .= Red
Q_rr or qqR_ or qqrr= white
2). F. 0.00(none)
Explanation.
AAbb x aaBB
Ab/aB
Ab/aB x ab/ab
As the two genes are linked, only two types of gametes are produced from genotype, Ab/aB.
ab Ab Ab/ab aB aB/abRelated Questions
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