मराठी

Define Mutation and Give Its Significance. - Biology

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प्रश्न

What is crossing-over? What are the factors affecting it?

टीपा लिहा

उत्तर

Crossing-over is the interchange of the parts of the chromatid of a pair of chromosomes. High temperature, X-rays and radiation treatment are the factors affecting crossing-over.

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पाठ 2: Fundamentals of Genetics - Short Questions

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आईसीएसई Biology [English] Class 10
पाठ 2 Fundamentals of Genetics
Short Questions | Q 3

संबंधित प्रश्‍न

A cross used to verify the unknown genotype of the F1 hybrid is a ______.


What is Genetics?

What is heredity?

Note down the allele pairs studied by Mendel. Mention which allele is dominant.

Differentiate Between Homozygous shows Heterozygous.


A pure tall plant (TT) is crossed with a pure dwarf plant (tt).
Draw Punnet squares to show
(1) F2 generation
(2) F2 generation.


Give the Phenotype of the F2 generation.


Name the following:

The study of heredity and variation.


Give Technical Term:

Transmits characteristics from parents to offsprings.


Give Technical Term:

The individuals having dissimilar pairs of genes.


Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Most genetic diseases in man are recessive in character.


Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

A female is responsible for the sex of the progeny.


The word chromosome was coined by


In a dihybrid cross with contrasting characters, the number of different genotypes obtained in F2 generation are ______.


Identify the genotype of peacock.


______ type/s of gametes is/are expected to be formed by the organism with genotype AABBCC.


The appearance of new combinations in the F2 generation of a dihybrid cross proves the law of ______.


An indvidual of genotype, Aa Bb Cc Dd is used in test cross. How many different phenotypes can appear in this progeny?


How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?


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