The figure shown indicates a homologous pair of chromosomes. Which of the follow
ID: 93767 • Letter: T
Question
The figure shown indicates a homologous pair of chromosomes. Which of the following indicates the relationship between "Gene A" and the circled gene?
A. The circled gene must contain the same allele as "Gene A."
B. The circled gene must contain a different allele than "Gene A."
C. The circled gene must encode information for the same trait as "Gene A."
D. The circled gene muse encode information for a trait related to "Gene A."
The figure shown indicates the genotypes of two pea plants. Which of the following is true for a cross of these two plants?
A. All of the offspring will have the same phenotype as one of the parents. Gene AExplanation / Answer
a) The correct answer is option (C).
The circled gene must encode information for the same trait as "Gene A."
Homologous pairs of chromosomes are defined as pairs of chromosomes encoding information for the same traits. They consist of same genes present at the same loci. The alleles may be same or different.
b) The correct answer is option (A).
All of the offspring will have the same phenotype as one of the parents.
Parents: RRYY (round-yellow seeds) X rryy (wrinkled-green seeds)
Gametes: RY ry
Offsprings: RrYy ( round-yellow seeds)
In the following cross, 'R' allele codes for the round phenotype and is dominant to 'r' allele (wrinkled phenotype). 'Y' allele codes for the yellow seeds and is dominant to 'y' allele (green phenotype).