CAIE IGCSE Biology 17.1.10 Defining a Haploid Nucleus
Practise defining a haploid nucleus and calculating its chromosome number from diploid cells or zygotes.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- define a haploid nucleus as containing one set of unpaired chromosomes
- identify gametes and gametophyte cells as haploid in familiar or unfamiliar species
- calculate the haploid number as half the diploid chromosome number
17.1.10—Haploid nucleus as a nucleus question 1
Fig. 3.2 shows the life cycle of a fern. The life cycle of a fern has some similarities and some differences compared with the life cycles of other plants.
The letters represent processes that occur during the life cycle.
The haploid stages of the life cycle are represented by (n).
The diploid stages of the life cycle are represented by (2 n).
Fig. 3.2
The adult sporophyte has 1200 chromosomes in its body cells.
State the number of chromosomes in the body cells of the gametophyte.
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