Choose the crosses which do not form the plants with the genotypes as YYRR.
I. Yy Rr X Yy Rr II. YY Rr X Yy rr III. YY rr X yy RR IV. Yy RR X YY Rr

I and II

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II and III

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III and IV

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II and IV

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Solution

The correct option is B II and III
YY Rr X Yy rr and YY rr X yy RR crosses do not form plants with genotype YYRR

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YyRR is crossed with yyRR. The $F_{1}$ progeny will be ___.

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

Q. In Mendel’s experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross

R R Y Y \times r r y y

∣ ∣ ∣ ∣ \begin{matrix} a - b & b - c & c - a x - y & y - z & z - x p - q & q - r & r - p \end{matrix} ∣ ∣ ∣ ∣

Q. Question 5
If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant (rr YY), the seeds produced in F1 generation are

(a) round and yellow
(b) round and green
(c) wrinkled and green
(d) wrinkled and yellow

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Choose the crosses which do not form the plants with the genotypes as YYRR. I. Yy Rr X Yy Rr II. YY Rr X Yy rr III. YY rr X yy RR IV. Yy RR X YY Rr

The correct option is B II and IIIYY Rr X Yy rr and YY rr X yy RR crosses do not form plants with genotype YYRR

Choose the crosses which do not form the plants with the genotypes as YYRR.
I. Yy Rr X Yy Rr II. YY Rr X Yy rr III. YY rr X yy RR IV. Yy RR X YY Rr

The correct option is B II and III
YY Rr X Yy rr and YY rr X yy RR crosses do not form plants with genotype YYRR