The percentage of ab gamete produced by AaBb parent will be

Important Questions on Principles of Inheritance and Variation

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IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 40

When a cross is made between a tall plant with yellow seeds (TtYy) and a tall plant with green seeds (Ttyy), what is true regarding the proportions of phenotypes of the offsprings in ${\mathrm{F}}_1$ generation?

	The proportion of Tall and Green	The proportion of Dwarf and Green
(i)	$\raisebox{1ex}{$3$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$
(ii)	$\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$
(iii)	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$3$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$
(iv)	$\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 41

How many types of gametes can be produced by a diploid organism who is heterozygous for 4 loci?

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 42

The given Punnett’s square represents the pattern of inheritance in a dihybrid cross where yellow (Y) and round (R) seed condition is dominant over white (y) and wrinkled (r) seed condition.

	YR	Yr	yR	yr
YR	F	J	N	R
Yr	G	K	O	S
yR	H	L	P	T
yr	I	M	Q	U

A plant of type ‘H’ will produce seeds with the genotype identical to seeds produced by the plants of

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 43

Read the given paragraph to answer the Questions.
In a certain plant, yellow fruit colour (Y) is dominant to green fruit colour (y) and round shape (R) is dominant to oval shape (r). The two genes involved are located on different chromosomes.
Which of the following will result when plant YyRr is self- pollinated?

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 44

Read the given paragraph to answer the Questions.
In a certain plant, yellow fruit colour (Y) is dominant to green fruit colour (y) and round shape (R) is dominant to oval shape (r). The two genes involved are located on different chromosomes.
Which of the following is correct for the condition when plant YyRr is back crossed with the double recessive parent?

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 45

"When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters". The statement explains which of the following laws/principles of Mendel?

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 46

Law of independent assortment can be explained with the help of

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 47

Mendel’s work was rediscovered by three scientists in the year