The word 'crossing over' is given by
Bateson
Darlington
Morgan
Muller
(c) The term was given by Morgan.
Which of the following statements is not trueof two genes that show $50\%$ recombination frequency ?
Select the incorrect statement(s) from the options given below with respect to dihybrid cross.
$I.$ Tightly linked genes on the same chromosome show higher recombinations.
$II.$ Genes far apart on the same chromosome show very few recombinations.
$III.$ Genes loosely linked on the same chromosome show similar recombinations.
For the preparation of genetic maps, the recombination frequencies between genes are additive over short distances but not over long distances due to
Two genes $R$ and $Y$ are located very close on the chromosomal linkage map of maize plant. When $RRYY$ and $rryy$ genotypes are hybridized, then $F_{2}$-segregation wii show
Sexual reproduction leads to
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