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प्रश्न
Mutation alerts the hereditary material. Give reasons.
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उत्तर
Mutation alerts the hereditary materiel of an organism's cell and results in a change in certain characters of traits. For example:
(a) Sickle-cell anemia is a blood disease caused by a gene mutation. The mutation causes a change in the DNA which controls the productivity of RBCs.
(b) Radioactive radiations also alter the gene structure and their effects can be seen generation after generation.
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संबंधित प्रश्न
The phenotypic ratio of incomplete dominance is ______.
What is a gene? How is it related to heredity?
State Mendel’s Law of Dominance.
Give the Phenotype of the F2 generation.
Give the Phenotypic and Genotypic ratio of the F2 and F2 generation.
Explain the Term Recessive character.
Complete the following sentence with appropriate word:
______is the hereditary unit.
Complete the following sentence with appropriate word:
Upon _______the diploid condition is restored.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
DNA has a double-helical structure.
Multiple choice question.
When F2 phenotypic and genotypic ratios are the same, then it is an example of _______.
Give any two points of difference between homozygous and heterozygous.
______ 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 ______.
The percentage of each gamete out of four different types of gametes produced by the F1 dihybrid will be ________.
Define Alleles.
How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
Which one of the following character is recessive in case of a pea plant?
A pair of corresponding chromosomes of the same shape, size and one from each parent is called ______.
Name any two genetic diseases in humans.
