Senior Secondary · 11-12 · Biology
What is the process of cell division that produces two genetically identical daughter cells, used for growth and repair?
Mitosis
What is the process of cell division that produces four genetically different sex cells (gametes) with half the chromosome number?
Meiosis
How many chromosomes are in a normal human body (somatic) cell?
46 (23 pairs)
How many chromosomes are in a human gamete (sperm or egg cell)?
23
In a Punnett square cross between two heterozygous parents (Aa × Aa), what fraction of offspring are expected to show the recessive phenotype?
1/4 (25%)
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