CAIE IGCSE Biology 17.4.5 Pure-breeding Homozygous Parents
Practise explaining why identical homozygous parents produce pure-breeding offspring for a chosen trait.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- state that identical homozygous individuals breeding together are pure-breeding
- choose identical homozygous parent genotypes for a required pure-breeding line
- use offspring from a test cross to check whether an unknown parent is homozygous
17.4.5—Two identical homozygous individuals question 1
[Maximum number: 1]
Researchers carried out some experiments on tomato plants that were homozygous for fruit colour.
State how the researchers could be sure that the fruit came from homozygous plants.
(perform a) test cross ;
All question bank results loaded