On the basis of Mendel's work which of the following laws were formulated?

$I.$ Linkage

$II.$ Segregation

$III.$ Incomplete dominance

$IV.$ Independent assortment

Choose the correct option

  • A

    $I, III$ and $IV$

  • B

    $II$ and $IV$

  • C

    $II, III$ and $IV$

  • D

    $I, II$ and $III$

Similar Questions

The word 'crossing over' is given by

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.

  • [AIIMS 2018]

Crossing over causes

  • [AIPMT 1991]

$A$ : Morgan's cross III was conducted in Drosophila to locate genes on chromosome for white eye colour.
$R$ : The cross was done between red eyed hybrid female and white eyed male.

Morgan hybridised yellow-bodied, white-eyed females to brown-bodied, red-eyed males and intercrossed their $F_{1}$ progeny. He observed that

$(a)$ $F_{2}$ ratio was deviated very significantly from the $9 : 3 : 3 : 1$ ratio

$(b)$ Both genes did not segregate independently of each other

$(c)$ Recombinant types are not obtained in $F_{2}$ generation

$(d)$ Both genes segregate independently of each other

Select the correct set of statements :