Question

46
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4. Question numbers 4@)- 4(d) are based on the table given below.
Study the table and write the characteristics of the progeny in the following crosses,


(a) RR YY X RR YY
Round, yellow and Round yellow
(6) RrYy X RrYy
Round, yellow and Round, yellow=
(c) ET yy X styy
wrinkleden and wrinkled, green
(d) RR YY Xvy
Round, yellow and wrinkled green​

Answer 1

1st cross gives all round and yellow seeded plant.

All the varieties like round yellow, round green, wrinkled yellow and wrinkled green seeded plants are seen.

Only wrinkled green seeded plants are seen.

All round yellow seeded plants are seen.

Explanation:

• In the 1st cross, the plants are all having round seeds and yellow pod colour. They all are homozygous dominant in nature.

• So, they will produce all homozygous dominant characters.

• In the 2nd cross, both the plants are hybrid dominant plants.

• So all the offsprings produced are having round yellow, round green, wrinkled yellow and wrinkled green coloured seed character in ratio of 9:3:3:1.

• In the 3rd cross, all the plants are having recessive characters.

• So both of them are having homozygous condition.

• So both of them have wrinkled green seeded plants as offsprings.

• In the final cross, the plants are both homozygous, but one is dominant and other is recessive.

• So both of them will have round yellow seeded plants as offsprings, but they will be heterozygous.

For more information about cross,

https://brainly.in/question/6935158

In pea plant, spherical seeds (S) is dominant to dented seeds(s). In a genetic cross of two plants that are heterozygous for seed shape trait, what fraction of the offspring should have spherical seeds ?

https://brainly.in/question/9764298

Make a Punnett square for finding out the

proportion of different genotypes in the progeny od

a genetic cross between

(a) A pure tall (TT) pea plant with a pure dwarf (1)

pea plant.

(b) Red flower variety of pea (RR) with white flowe

variety of pea (rr)

​