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Hello students.
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Now in this question they have given that there are crosses that occurs between two pink flowered 4 o 'clock plant as a result of which 24 of them were red, 53 were pink and 26 were white.
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How is this even happening? now if you observe here the offsprings are given, right? and the parents are also given.
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Correct.
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So using that can't we find out what the reason being? behind this is right.
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So here first we will have to draw a punnet square.
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How will we draw a punnets square? draw square.
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Right.
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And then draw five lines between them.
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What are the five lines? first row will represent the gametes of one parent.
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The first column will represent gametes of another parent and we will observe that in between the four boxes that are present will be the region where we will write the genotype of that particular organism.
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Now if you observe the offspring rate, we are observing that it is 24, 53, 26, which is almost equivalent to if you observe 25 red, if we consider 25 red and 25 white, then you're observing 50 pink, right? so based on that, we can say that the genotypic ratio of the offspring, right? what is it? the genotypic ratio of the offspring is basically 1 is 2 2 is to 1 which means there is 1 homozygous, 2 heterozygous and 1 homozygous right.
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So here we will write the first one homozygous dominant which is red correct.
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The next one will be heterozygous dominant, which will be pink, correct? then we will write pink again, which is heterozygous dominant, and the white, which will be homozygous recessive, right? so here, how do we find the parent? here, if you observe, both of them have r...