Question

Which one of the following cross will
have 1:1:1:1 ratio of progeny?
A. YyRr × YyRr
B. YyRr × yyrr
C. YyRR × yyrr
D. YYRR × yyrr

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Answer 1

Answer:

B will be the answer

Explanation:

Because  YyRr×yyrr is like [Test Cross]

                                      YR  ║   Yr   ║    yR  ║   yr

                            yr  ║ YyRr |  Yyrr  |   yyRr   |  yyrr

so the ratio would be       1   :   1      :      1      :     1

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Answer 2

Answer:

→ [B] Yy Rr × yyrr

Explanation:

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