DP Biology (first assessment 2025)

Test builder »

Question 22M.1A.SL.TZ2.15

Select a Test
Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.15
Level SL Paper 1A Time zone TZ2
Command term Question number 15 Adapted from N/A
15.
[Maximum mark: 1]
22M.1A.SL.TZ2.15

The pedigree chart shows the inheritance of hemochromatosis, a genetic disease which causes an excessive accumulation of iron in the body.

 

What can be deduced about this genetic disease from the pedigree chart?

A. It is sex-linked.

B. It is autosomal dominant.

C. It is autosomal co-dominant.

D. It is autosomal recessive.

[1]

Markscheme

D

Syllabus sections