Different molecular forms of a gene

Match the following lists: List - I List - II (A) Back cross It is the genetic make up of an individual. (B) Test cross (II) An individual is having two different alleles for a single character. Consequently, it will produce two different types of gametes with reference to a gene. (C) Heterozygote (III) An individual is having two similar or identical alleles for a single character. Hence, it will produce only one kind of gametes with reference to a gene. (D) Homozygote (IV) If the F 1 progeny are mated back to one of their parents. (V) The cross between F 1 progeny (or heterozygotes) and their recessive homozygous parent. The correct match is:

A = IV , B = V , C = II , D = III

A = IV , B = V , C = I , D = II

A = V , B = III , C = I , D = II

A = V , B = IV , C = II , D = I

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The phenotypic ratio of trihybrid cross in $F_{2}$ - generation is

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Important Questions on Principles of Inheritance and Variation

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

What is the possible genotypic ratio in

F_{2}

generation if a plant producing red flowers

(RR)

is crossed with another plant of the same species that produces white flowers

(rr) ?

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

A true breeding plant is:

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

In human beings, brown eye (B) is dominant over blue eye (b). A brown-eyed couple has a blue-eyed child. What are the possible genotypes of the couple?

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

The maximum number of different gametes of the pollens produced by a tall pea plant with round, yellow, seeds of the genotype

TtRrYY

, if the three loci are unlinked, would be

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Alleles are:

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Some of

F_{2}

progeny are formed during dihybrid cross between round and yellow

(\overset{↑}{o})

and wrinkled and green

(\overset{\circ}{+})

pea plants. Their genotypes are:

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

According to Mendel, ........................ segregate and ..................... assort independently.

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

How many types of gametes can be produced by individual with the genotype AAbb?

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Explain Hardy Weinberg Principle with the help of a Punnett square.

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Define the term ‘recessive’.

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

A cross wạs carried out between two individuals, heterozygous for two pairs of genes. Assuming segregation and independent assortment, the number of different genotypes and phenotypes obtained respectively would be

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

If the gene pool of the locus X in the human genome is 4, then what would be the highest possible number of genotypes in a large population?

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Monohybrid cross is a cross of ________.

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

A round seeded tall pea plant is crossed with round seeded dwarf plant and obtained progeny are with following phenotypes
$3$ - Tall, Round
$3$ - Dwarf, Round
$1$ - Tall, Wrinkled
$1$ - Dwarf, Wrinkled

The possible genotype of parents:

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

F_{1}

hybrid shows characters of both the parents, then it is due to

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Assertion (A): Two copies of the gene are the two allelic forms of which, one allele produces a non-functional enzyme.
Reason (R): The modified allele is generally the recessive allele.
The correct option among the following is:

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

The production of gametes by the parents, formation of zygotes, the

F_{1}

and

F_{2}

plants, can be understood from a diagram called:

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the

F_{1}

plants were selfed the resulting genotypes were in the ratio

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Give any two traits studied by Mendel.

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One Gene

Match the following lists:

	List - I		List - II
(A)	Back cross		It is the genetic make up of an individual.
(B)	Test cross	(II)	An individual is having two different alleles for a single character. Consequently, it will produce two different types of gametes with reference to a gene.
(C)	Heterozygote	(III)	An individual is having two similar or identical alleles for a single character. Hence, it will produce only one kind of gametes with reference to a gene.
(D)	Homozygote	(IV)	If the $F_{1}$ progeny are mated back to one of their parents.
		(V)	The cross between $F_{1}$ progeny (or heterozygotes) and their recessive homozygous parent.

The correct match is:

The phenotypic ratio of trihybrid cross in F2 - generation is

Important Questions on Principles of Inheritance and Variation

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The phenotypic ratio of trihybrid cross in $F_{2}$ - generation is