The given pedigree shows the inheritance of earlobe shape in a family. The allele for free earlobes (F) is dominant to the allele for attached earlobes (f).What is the probability of the next child from the same parents having free earlobes?
Correct answer: B. 50 %
- A. 0 %
- B. 50 %
- C. 25 %
- D. 75 %
Explanation
Every child has 50% chance of having free earlobes as it will be heterozygous state(Ff) and the dominant allele for free earlobe will express itself. 0%, 25% and 75% are wrong.
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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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