Igcse Model Questions Vol1 2017 Biology Question 25

Practice objective / multiple choice question 25 from the 2017 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2017 Biology Objective / Multiple Choice Medium Difficulty
Question 25 IGCSE_MODEL_QUESTIONS_VOL1 • 2017 • BIOLOGY • objective

In a certain flowering plant, flower colour (R = red, r = white, R dominant) and plant height (T = tall, t = short, T dominant) are linked on the same chromosome with a recombination frequency of 10 %. A heterozygous plant (RrTt) in coupling phase (RT / rt) is crossed with a homozygous recessive plant (rrtt). What proportion of the offspring are expected to be both red and tall?

Answer Options

A. 40 % (or 0.40) of the offspring will be red and tall.
B. 55 % (or 0.55) of the offspring will be red and tall.
C. 35 % (or 0.35) of the offspring will be red and tall.
Correct Answer D. 45 % (or 0.45) of the offspring will be red and tall.
Correct Answer
D
Correct Option:
45 % (or 0.45) of the offspring will be red and tall.

About This Question

This is Igcse Model Questions Vol1 2017 Biology Question 25. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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