NEET BIOLOGY

Detailed explanation-1: -This cross between RR and rr is defined as a monohybrid cross. The heterozygous F1 offspring produces two types of gametes, which after selfing produce offspring which have a genotypic ratio of 1:2:1.

Detailed explanation-2: -RR x rr. You’ll note that 100% of all offspring are Rr, which is the genotype. Since the genotype for all offspring are the same, and the Rr genotype encodes a pink color, then 100% of the phenotypes will be pink (NOT red-remember that this is incomplete dominance).

Detailed explanation-3: -Only one trait is used in the genetic cross. the heterozygous offspring. E.g. RR=Red, Rr=Pink, and rr=white ▪ Co-dominance: Both alleles contribute to the phenotype. Offspring will have combination of two alleles.

Detailed explanation-4: -It describes the number of times a genotype would appear in the offspring after a test cross. For example, a test cross between two organisms with the same genotype, Rr, for a heterozygous dominant trait will result in offspring with genotypes: RR, Rr, and rr. In this example, the predicted genotypic ratio is 1:2:1.

Detailed explanation-5: -AABB × aabb Was this answer helpful?