Study the following cross and show self-pollination in F1, fill in the blank and answer the question that follows.

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Solution

Cross between homozygous dominant and homozygous recessive gives heterozygous individuals. In this case, the F1 generation would be RrYy (Round and Yellow) only.

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Question 44
Study the following cross and showing self-pollination in F1, fill in the blank and answer the question that follows.
$\begin{matrix} P a r e n t s & R R Y Y & x & r r y y R o u n d, y e l l o w & w r i n k l e d, g r e e n F 1 - & R r Y y & x & ? R o u n d, y e l l o w \end{matrix}$

Q. In the following crosses write the characteristics of the progeny

Cross	Progeny
(a) RRYY x RRYY Round yellow, Round yellow	________
(b) RrYy x Rr Yy Round yellow, Round yellow	________
(c) rryy x rryy wrinkled green, wrinkled green	_______
(d) RRYY x rryy Round yellow, wrinkled green	________

Question 43
In the following crosses write the characteristics of the progeny
$\begin{matrix} C r o s s & P r o g e n y (a) R R Y Y x R R Y Y R o u n d, y e l l o w R o u n d, y e l l o w & . . . . . . . (b) R r Y y x R r Y y R o u n d, y e l l o w R o u n d, y e l l o w & . . . . . . . (c) r r y y x r r y y w r i n k l e d, g r e e n w r i n k l e d, g r e e n & . . . . . . . (d) R R Y Y x r r y y R o u n d, y e l l o w w r i n k l e d g r e e n & . . . . . . . \end{matrix}$

Question 5
If a round, green-seeded pea plant (RRyy) is crossed with wrinkled, yellow-seeded pea plant (rrYY), the seeds produced in F1 generation are

(a) round and yellow
(b) round and green
(c) wrinkled and green
(d) wrinkled and yellow
( Round-R, Green-y, Wrinkled-r, Yellow-Y)

Question 11
Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have a new combination of characters. Choose the new combination of the following.
(i) Round, yellow
(ii) Round, green
(iii) Wrinkled, yellow
(iv)Wrinkled, green
(a) (i) and (ii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (i) and (iii)

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Mendel's Work

Standard X Biology

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