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In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to be
- a)YY and yy
- b)Yy and yy
- c)Yy and Yy
- d)YY and Yy
Correct answer is option 'B'. Can you explain this answer?
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In a plant species, yellow seed colour (Y) is completely dominant over...
Introduction:
In this question, we are given information about a plant species where yellow seed color (Y) is dominant over white seed color (y). We also know the result of a genetic cross between plants with yellow seeds and plants with white seeds, which yielded a progeny population consisting of 48 yellow-seeded plants and 52 white-seeded plants. We need to determine the genotypes of the yellow-seeded and white-seeded parent plants.
Explanation:
To solve this problem, we need to understand the principles of Mendelian genetics and the inheritance pattern of seed color in this plant species. Let's analyze the possible genotypes of the parent plants:
1. Yellow-seeded parent plant:
Since yellow seed color is dominant over white, the yellow-seeded parent plant can have either a homozygous dominant genotype (YY) or a heterozygous genotype (Yy).
2. White-seeded parent plant:
White seed color is recessive, so the white-seeded parent plant must have a homozygous recessive genotype (yy).
Now, let's consider the possible combinations of these genotypes and see if they can explain the observed progeny population:
Possible Genotype Combinations:
1. YY x yy
If the yellow-seeded parent is homozygous dominant (YY) and the white-seeded parent is homozygous recessive (yy), then all the offspring should have yellow seeds. However, this contradicts the given information that there were 52 white-seeded plants in the progeny population. Therefore, this combination is not possible.
2. Yy x yy
If the yellow-seeded parent is heterozygous (Yy) and the white-seeded parent is homozygous recessive (yy), then we can apply the principles of Mendelian genetics to determine the expected phenotypic ratio of the progeny. In this case, the expected phenotypic ratio would be 1 yellow-seeded:1 white-seeded, which matches the observed progeny population of 48 yellow-seeded plants and 52 white-seeded plants. Therefore, this combination is the most likely explanation.
3. Yy x Yy
If both the yellow-seeded parent and the white-seeded parent are heterozygous (Yy), then the expected phenotypic ratio of the progeny would be 3 yellow-seeded:1 white-seeded. This does not match the observed progeny population, so this combination is not consistent with the data.
Conclusion:
Based on the analysis above, the most likely genotypes of the yellow-seeded and white-seeded parent plants are Yy and yy, respectively. Therefore, the correct answer is option B: Yy and yy.
In this question, we are given information about a plant species where yellow seed color (Y) is dominant over white seed color (y). We also know the result of a genetic cross between plants with yellow seeds and plants with white seeds, which yielded a progeny population consisting of 48 yellow-seeded plants and 52 white-seeded plants. We need to determine the genotypes of the yellow-seeded and white-seeded parent plants.
Explanation:
To solve this problem, we need to understand the principles of Mendelian genetics and the inheritance pattern of seed color in this plant species. Let's analyze the possible genotypes of the parent plants:
1. Yellow-seeded parent plant:
Since yellow seed color is dominant over white, the yellow-seeded parent plant can have either a homozygous dominant genotype (YY) or a heterozygous genotype (Yy).
2. White-seeded parent plant:
White seed color is recessive, so the white-seeded parent plant must have a homozygous recessive genotype (yy).
Now, let's consider the possible combinations of these genotypes and see if they can explain the observed progeny population:
Possible Genotype Combinations:
1. YY x yy
If the yellow-seeded parent is homozygous dominant (YY) and the white-seeded parent is homozygous recessive (yy), then all the offspring should have yellow seeds. However, this contradicts the given information that there were 52 white-seeded plants in the progeny population. Therefore, this combination is not possible.
2. Yy x yy
If the yellow-seeded parent is heterozygous (Yy) and the white-seeded parent is homozygous recessive (yy), then we can apply the principles of Mendelian genetics to determine the expected phenotypic ratio of the progeny. In this case, the expected phenotypic ratio would be 1 yellow-seeded:1 white-seeded, which matches the observed progeny population of 48 yellow-seeded plants and 52 white-seeded plants. Therefore, this combination is the most likely explanation.
3. Yy x Yy
If both the yellow-seeded parent and the white-seeded parent are heterozygous (Yy), then the expected phenotypic ratio of the progeny would be 3 yellow-seeded:1 white-seeded. This does not match the observed progeny population, so this combination is not consistent with the data.
Conclusion:
Based on the analysis above, the most likely genotypes of the yellow-seeded and white-seeded parent plants are Yy and yy, respectively. Therefore, the correct answer is option B: Yy and yy.
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In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to bea)YY and yyb)Yy and yyc)Yy and Yyd)YY and YyCorrect answer is option 'B'. Can you explain this answer?
Question Description
In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to bea)YY and yyb)Yy and yyc)Yy and Yyd)YY and YyCorrect answer is option 'B'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to bea)YY and yyb)Yy and yyc)Yy and Yyd)YY and YyCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to bea)YY and yyb)Yy and yyc)Yy and Yyd)YY and YyCorrect answer is option 'B'. Can you explain this answer?.
In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to bea)YY and yyb)Yy and yyc)Yy and Yyd)YY and YyCorrect answer is option 'B'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to bea)YY and yyb)Yy and yyc)Yy and Yyd)YY and YyCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a plant species, yellow seed colour (Y) is completely dominant over white (y). A genetic cross between plants with yellow seeds and plants with white seeds yielded a progeny population of 48 yellow-seeded and 52 white-seeded plants. The genotypes of the yellow-seeded and the white-seeded parent plants, respectively, are most likely to bea)YY and yyb)Yy and yyc)Yy and Yyd)YY and YyCorrect answer is option 'B'. Can you explain this answer?.
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