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Laws of Mendel

The character...

Question

The _______ character appears in F1 generation when the progenies are heterozygous.

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Solution

Law of dominance explains that out of the two factors determining a character, one is dominant- this is the one that gets expressed in the heterozygous condition.

Thus the dominant character appears in F1 generation when the progenies are heterozygous.

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Similar questions

Q. The character which appears in

F_{1}

generation when two parents possessing contrasting characters are crossed is

Dominant character appears both in homozygous and heterozygous condition, whereas recessive character appears only in homozygous condition.

Q. In Mendel’s experiments, the

F_{1}

progeny resembles either of the two parents. The character that was not visible in this generation was:

Q. Which of the following statements is/are correct about F2 generation obtained by Mendelian dihybrid cross?
A.

1 / 16^{t h}

of the progenies are pureline for recessive traits.
B.

1 / 8^{t h}

of the progenies are pure lines for recessive as well as dominant traits for both the characters.
C.

1 / 4^{t h}

of the progenies are heterozygous for both the characters.
D.

9 / 16^{t h}

of the progenies show recessive phenotypes for both the characters.

Q. If plants with genotypes RrYy and rryy are crossed with each other, then what percentage of progenies produced in F₁ generation would be heterozygous for both the characters?

यदि जीनप्ररूप (जीनोटाइप) RrYy तथा rryy वाले पादपों का एक-दूसरे के साथ संकरण करवाया जाए तो F₁ पीढ़ी में उत्पन्न होने वाले कितने प्रतिशत संतति दोनों अभिलक्षणों के लिए विषमयुग्मजी होंगे?

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