Question

Give the genotypes and phenotypes of a backcross between the F1, and the cream fruit colour homozygous parent.

Answer 1

All are of heterozygous red fruit colour (Rr).....



Hope it helps!!

Answer 2

GENOTYPE: Genotype is a genetic constitution of an organism or the set of genes or alleles that an individual possesses.e.g TT, Tt,tt.
*Alleles - Alleles are the alternate forms of a gene or a pair of matching gene.
PHENOTYPE: Phenotype is an outward visible expression of genes which is an inherited feature in an individual's appearance.

SOLUTION:
RR(Orange) × rr(cream)
F1 generation- Rr(orange)

The back cross of the F1 offspring(Rr) Orange with the cream parent(rr) is also a test cross. The product of this test cross should produce generation ½ of which are heterozygous for orange and ½ of which are homozygous for cream fruit.
Rr X rr
(F1) (cream parent)
½ Rr 1/2rr

PHENOTYPIC RATIO : ½ orange : ½ cream
GENOTYPIC RATIO : ½ Rr : ½ rr

HOPE THIS WILL HELP YOU...