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Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows that
- a)Y chromosome is essential for sex' determination in Drosophila.
- b)Y chromosome is female sex determinant in Drosophila.
- c)Y chromosome is male sex determinant in human beings.
- d)Y chromosome has no role in sex determination either in Drosophila or in human beings
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Drosophila flies with XXY genotype are females, but human beings with ...
Y chromosome are male sex determinant in human beings because human beings have two sex chromosomes X and Y and male gamete reaching the ovum for fertilization has only one of them, so the y chromosome is crucial in determining the sex of the male
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Community Answer
Drosophila flies with XXY genotype are females, but human beings with ...
Explanation:
In Drosophila flies, the sex determination is primarily based on the number of X chromosomes. The presence of two X chromosomes (XX) results in the development of female flies, while the presence of only one X chromosome (X0) leads to the development of male flies. Therefore, the Y chromosome is not involved in sex determination in Drosophila.
However, in humans, the sex determination is different compared to Drosophila. Humans have two types of sex chromosomes, X and Y. Typically, females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). The Y chromosome contains the SRY gene (Sex-determining Region Y), which is responsible for initiating the development of male characteristics. The presence of the Y chromosome with the SRY gene determines the male sex in humans.
Comparison between Drosophila and Humans:
XYY genotype in Drosophila:
- In Drosophila flies, individuals with an XXY genotype are females.
- This suggests that the presence of two X chromosomes is sufficient for the development of female characteristics in Drosophila.
- The Y chromosome does not play a role in determining the sex of Drosophila flies.
XYY genotype in Humans:
- In humans, individuals with an XYY genotype are males.
- This indicates that the presence of two Y chromosomes (XY) leads to the development of male characteristics in humans.
- The Y chromosome, specifically the SRY gene, is essential for male sex determination in humans.
Conclusion:
Based on the given information, the correct answer is option 'C'. The abnormal male phenotype in humans with an XYY genotype suggests that the Y chromosome is the male sex determinant in human beings. In contrast, the presence of an XXY genotype in Drosophila flies results in females, indicating that the Y chromosome has no role in sex determination in Drosophila.
In Drosophila flies, the sex determination is primarily based on the number of X chromosomes. The presence of two X chromosomes (XX) results in the development of female flies, while the presence of only one X chromosome (X0) leads to the development of male flies. Therefore, the Y chromosome is not involved in sex determination in Drosophila.
However, in humans, the sex determination is different compared to Drosophila. Humans have two types of sex chromosomes, X and Y. Typically, females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). The Y chromosome contains the SRY gene (Sex-determining Region Y), which is responsible for initiating the development of male characteristics. The presence of the Y chromosome with the SRY gene determines the male sex in humans.
Comparison between Drosophila and Humans:
XYY genotype in Drosophila:
- In Drosophila flies, individuals with an XXY genotype are females.
- This suggests that the presence of two X chromosomes is sufficient for the development of female characteristics in Drosophila.
- The Y chromosome does not play a role in determining the sex of Drosophila flies.
XYY genotype in Humans:
- In humans, individuals with an XYY genotype are males.
- This indicates that the presence of two Y chromosomes (XY) leads to the development of male characteristics in humans.
- The Y chromosome, specifically the SRY gene, is essential for male sex determination in humans.
Conclusion:
Based on the given information, the correct answer is option 'C'. The abnormal male phenotype in humans with an XYY genotype suggests that the Y chromosome is the male sex determinant in human beings. In contrast, the presence of an XXY genotype in Drosophila flies results in females, indicating that the Y chromosome has no role in sex determination in Drosophila.
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Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer?
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Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer?.
Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer?.
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Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows thata)Y chromosome is essential for sex determination in Drosophila.b)Y chromosome is female sex determinant in Drosophila.c)Y chromosome is male sex determinant in human beings.d)Y chromosome has no role in sex determination either in Drosophila or in human beingsCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
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