Phenotypic of Downs syndrome increases when the maternal age is

Question

Phenotypic of Downs syndrome increases when the maternal age is (A) 3:.1 (B) 1 :1 (C) 1:2: 1 (D) 2: 1

Tardigrade Admin · Accepted Answer

Monohybrid test cross is cross between a hybrid dominant for one gene and recessive homozygous individual, e.g., Rr and rr.Thus, the phenotypic ratio is 1:1.

Q. Phenotypic of Downs syndrome increases when the maternal age is

3:.1

1 :1

1:2: 1

2: 1

Monohybrid test cross is cross between a hybrid dominant for one gene and recessive homozygous individual, e.g., Rr and rr.
Thus, the phenotypic ratio is 1:1.