DP Biology (first assessment 2025)

Test builder »

Question 20N.1A.SL.TZ0.13

Select a Test
Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1A.SL.TZ0.13
Level SL Paper 1A Time zone TZ0
Command term Question number 13 Adapted from N/A
13.
[Maximum mark: 1]
20N.1A.SL.TZ0.13

In the pedigree chart, individuals affected by a genetic disease are shown as shaded symbols. Squares represent males and circles females.

 

What is the mode of inheritance of the genetic disease?

A. Inherited as a dominant autosomal allele

B. Inherited as a recessive autosomal allele

C. Inherited as a recessive sex-linked allele

D. Inherited as a dominant sex-linked allele

[1]

Markscheme

A

Syllabus sections