Question

In tomato plants, having yellow fruit and dwarf vines is the recessive condition. Having red fruit and long vines is the dominant condition. A cross was done between two plants that were heterozygous for both traits.

What is the probability the offspring will have yellow fruit and dwarf vines?

Answer 1

25% of offspring will have yellow fruit and dwarf vines

Step-by-step explanation:

denoting that:

D - red fruit, long vines (dominant)

r - yellow fruit, dwarf vines (recessive)

parental phenotype: Red fruit 》 Red fruit

parental genotype: Dr 》 Dr

gametes: (D) (r) 》 (D) (r)

random fertilization: punnet square

D r

D DD Dr

r Dr rr

F1 generation phenotype: Red fruit 》 yellow fruit

F1 generation genotype: DD, Dr, Dr 》 rr

ratio: 3 : 1

percentage: 75% 》 25%

[ the symbol " 》" is used simply as a divider as if all the information were in a table]