If two heterozygous tall plants are crossed together, the proportion of phenotypically tall plants will be:
Correct answer: C. 75%
- A. 50%
- B. 25%
- C. 75%
- D. 100%
Explanation
A cross between two heterozygous tall plants results in 25% homozygous tall, 50% heterozygous tall, and 25% dwarf plants. So we add 50+25 to get 75% as the proportion of phenotypically tall plants.
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About Mendel's Laws of Inheritance
Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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