Same chapter3 marksDifficulty: Medium
What is a mutation? State one example in human beings.
Genetics
4 marksDifficulty: Medium
In pea plants tall (T) is dominant over dwarf (t). A pure tall plant is crossed with a dwarf plant. Give the genotype and phenotype of the F1 and the F2 generations.
Original Khojo Papers practice question — not from a past board paper.
Answer
The F1 are all Tt and tall. On self-pollinating the F1, the F2 are 1 TT : 2 Tt : 1 tt, that is three tall to one dwarf.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The dwarf character reappears in the F2 because the recessive allele was carried, unexpressed, through the F1.
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