2. The ability to roll the tongue (R) is dominant over the inability (r). A homozygous non-roller (rr) marries a heterozygous roller (Rr). a. What are the genotypic and phenotypic ratios of their children? b. What percentage of their children will be tongue rollers?

Question

2. The ability to roll the tongue (R) is dominant over the inability (r). A homozygous non-roller (rr) marries a heterozygous roller (Rr). a. What are the genotypic and phenotypic ratios of their children? b. What percentage of their children will be tongue rollers?​

annamariviccristo208 · Answer

Answer:Here's the breakdown of the genetics involved: a. Genotypic and Phenotypic Ratios - Parental Genotypes:  - Mother: rr (non-roller) - Father: Rr (roller) - Punnett Square: Table
  
 R r r Rr rr r Rr rr  - Genotypic Ratio:  - Rr: 2 (heterozygous rollers) - rr: 2 (homozygous non-rollers) - Ratio: 1:1 - Phenotypic Ratio:  - Roller: 2 - Non-roller: 2 - Ratio: 1:1 b. Percentage of Tongue Rollers - Out of the four possible offspring, two will be tongue rollers (Rr). - Therefore, 50% of their children will be tongue rollers.

2. The ability to roll the tongue (R) is dominant over the inability (r). A homozygous non-roller (rr) marries a heterozygous roller (Rr). a. What are the genotypic and phenotypic ratios of their children? b. What percentage of their children will be tongue rollers?​

Answer (1)

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2. The ability to roll the tongue (R) is dominant over the inability (r). A homozygous non-roller (rr) marries a heterozygous roller (Rr). a. What are the genotypic and phenotypic ratios of their children? b. What percentage of their children will be tongue rollers?

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