Gce Model Questions Vol1 2019 Biology Question 39

Practice objective / multiple choice question 39 from the 2019 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2019 Biology Objective / Multiple Choice Medium Difficulty

Question 39 GCE_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • objective

In peas, two linked genes A (tall) and B (green pods) have a recombination frequency of 10 %. A plant heterozygous for both genes (genotype AaBb) is test‑crossed with a homozygous recessive aabb. What phenotypic ratio (in simplest integer form) is expected among the progeny?

Answer Options

A. 9 : 3 : 3 : 1

B. 10 : 10 : 1 : 1

C. 8 : 8 : 2 : 2

Correct Answer D. 9 : 9 : 1 : 1

Correct Answer

Correct Option:

9 : 9 : 1 : 1

About This Question

This is Gce Model Questions Vol1 2019 Biology Question 39. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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Gce Model Questions Vol1 2019 Biology Question 39

In peas, two linked genes A (tall) and B (green pods) have a recombination frequency of 10 %. A plant heterozygous for both genes (genotype AaBb) is test‑crossed with a homozygous recessive aabb. What phenotypic ratio (in simplest integer form) is expected among the progeny?

Answer Options

About This Question

Master the Exam!

In peas, two linked genes A (tall) and B (green pods) have a recombination frequency of 10 %. A plant heterozygous for both genes (genotype AaBb) is test‑crossed with a homozygous recessive aabb. What phenotypic ratio (in simplest integer form) is expected among the progeny?