Sister chromatids of a chromosomes have

Same alleles at different loci

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Different genes at the same locus

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Different alleles of the same gene at the same locus

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Same alleles of the same gene at the same locus

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Solution

The correct option is D Different alleles of the same gene at the same locus
The sister chromatids are identical strands of DNA. During mitosis, the sister chromatids are separated and during meiosis homologous chromosomes pair up. Carry same genes in same loci but can have different alleles because one half is from the female and one half from the same the male (maternal and paternal).
So, the correct answer is 'Different alleles of the same gene at the same locus'.

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Similar questions

Are character(trait) and Gene both the same? Gene has two alleles and trait has two factors

	I		II
A	Dominance	i	In a heterozygous organism both alleles express themselves fully
B	Epistasis	ii	A single gene influences many characters
C	Pleiotropy	iii	One gene is suppressed by other gene.
D	Codominance	iv	One allele masks the other allele of the same gene

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