Practicing Success
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Which among the following statement is correct ? |
XX chromosomes are present in grasshopper female . XXY chromosomes are present in human as klinefelter's syndrome . XY chromosomes are present in male Drosophila . All of these . |
All of these . |
The correct answer is Option (4) – All of these. In human beings and in Drosophila the males have one X and one Y chromosome, whereas females have a pair of X-chromosomes besides autosomes. Klinefelter’s Syndrome is a genetic disorder caused due to the presence of an additional copy of X chromosome resulting into a karyotype of 47, XXY. Incase of grasshopper males have only one X-chromosome besides the autosomes, whereas females have a pair of X-chromosomes . |
