A tall plant is crossed with the dwarf plant. In F2 it produces:
Correct answer: C. 75% tall and 25% dwarf
- A. All tall
- B. 50% tall and 50% dwarf
- C. 75% tall and 25% dwarf
- D. 25% tall and 75% dwarfs
Explanation
When they are crossed, In the F1 generation all offspring are heterozygous tall, and when they are allowed to self-fertilize they produce F2 generation and Tt x Tt = 1. TT, 2. Tt, 3. Tt, 4. tt So the ratio will be 3:1 and 75% are tall while 25% are dwarf
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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