Distinguish between X andY chromosomes. (Mention any 'two' points.)
|No||X Chromosome||Y chromosome|
|1||These chromosomes are metacentric, hence appear X shaped.||These chromosomes are acrocentric,
hence appear Y shaped
|2||They are longer than ‘Y’ chromosomes||They are shorter than ‘X’ chromosomes|
|3||It contains large amount of euchromatin and small amount of heterochromatin.||It contains large amount of
heterochromatin and small amount of
|4||Found in both male and females.||Found only in males.|
|5||Non-homologous part shows more genes
than Y chromosome.
|Non-homologous part contains few
genes as compared to X chromosome.
|6||X - linked genes are present on X chromosome.||Y- linked genes (Holandric genes) are
present on Y chromosome.
|7||Genes present on X chromosome show
|Genes present on Y chromosome show
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- Inheritance of Two Genes - Chromosome Theory of Inheritance