The colour of wheat seeds is controlled by two genes. The alleles (R1 and r1) of one gene assort independently to the alleles (R2 and r2) of the other gene. R1 and R2 produce a red pigment while r1 and r2 do not produce any pigment. The effect of the alleles is additive so that R1/R1; R2/R2 give dark red colour while r1/r1; r2/r2 produces white. A plant with R1/r1; R2/r2 has intermediate red colour. If the following cross was set up:
R1/r1; R2/r2 x R1/R1; R2/R2
A) none of the offspring would have the deep red colour similar to one of the parents.
B) some of the offspring would be white.
C) some of the offspring would have an intermediate red colour similar to one of the parents.
D) most of the offspring would have the deep red colour similar to one of the parents.
E) all of the offspring would have intermediate colour.
Correct Answer:
Verified
Q22: In tomato plants, a gene controlling fruit
Q23: A gene that controls coat colour in
Q24: Variation in phenotypic expression involves both expressivity
Q25: Polydactyly (extra fingers or toes) in humans
Q26: In a flowering plant, a mutation in
Q28: The colour of wheat seeds is controlled
Q29: In a organism heterozgyous for a particular
Q30: Autosomes are
A) alleles that are sex-linked, and
Q31: One of the main reasons that genes
Q32: The frequency of recombination was used to
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents