Rr×Rr combine the two heterozygous
Answer (1)
Answer:Here's the breakdown of combining two heterozygous genotypes (Rr x Rr): 1. Parental Genotypes: - Both parents are heterozygous (Rr), meaning they carry one dominant allele (R) for tongue rolling and one recessive allele (r) for non-tongue rolling. 2. Punnett Square: Table
R r R RR Rr r Rr rr 3. Genotypic Ratio: - RR: 1 (homozygous dominant, tongue roller) - Rr: 2 (heterozygous, tongue roller) - rr: 1 (homozygous recessive, non-tongue roller) - Ratio: 1:2:1 4. Phenotypic Ratio: - Tongue Roller: 3 (RR and Rr genotypes) - Non-Tongue Roller: 1 (rr genotype) - Ratio: 3:1 Conclusion: When two heterozygous individuals for tongue rolling (Rr x Rr) reproduce, their offspring will have a genotypic ratio of 1:2:1 (RR:Rr:rr) and a phenotypic ratio of 3:1 (tongue roller:non-tongue roller). This means that 75% of their children will be tongue rollers, and 25% will be non-tongue rollers.
