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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
A heterozygous tall plant of pea is crossed with a dwarf plant of pea.
Calculate the phenotypic ratio of the progeny.
What is a gene? How is it related to heredity?
Differentiate between genotype and phenotype.
A pure tall plant (TT) is crossed with a pure dwarf plant (tt).
Draw Punnet squares to show
(1) F2 generation
(2) F2 generation.
Explain the Term Heredity.
Explain the Term Crossing-over.
Give Technical Term:
Differences occurring within offsprings of the same progeny.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Mendel experimented upon plants of Oryza sativa.
Write the functional activity of the following structure:
Genes
Choose the Odd One Out
Choose the Odd One Out
Multiple Choice Question
Genetics is a branch of biology dealing with:
Multiple choice question.
In a dihybrid cross, F2 generation offsprings show four different phenotypes while the genotypes are _______.
Which one of the following genotype will yield only one type of gamete?
Mendel was successful in his experiments because:
In which region of chromosomes does crossing over take place?
Define the following term:
Gene
Rewrite the correct form of the statement by changing the first or last word only:
The full complement of DNA of an organism is termed as genetics.
