Unit of inheritance located at a fixed position on a chromosome is
A gene occupies a specific position or location on a chromosome known as the locus. An allele is a specific variant of that gene.
Get cold feet
Preferring or attracted to sunlight
Chew someone out
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Like a cakewalk
To shorten a word/phrase/text
Show a clean pairs of heels
Australia destroyed the board (A)/in the swimming, (B)/with gold medals (C)/in every race (D). No error (E)
Pick yourself up
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Hue and cry
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On the spur of the moment