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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.
संबंधित प्रश्न
- A pure tall plant (TT) is crossed with a pure dwarf plant (tt). Draw Punnett squares to show
- F1, generation
- F2 generation.
- Give the phenotype of F2 generation.
- Give the phenotype and genotypic ratios of the F1 and F2 generations.
Explain the Term Genotype.
Give Technical Term:
Differences occurring within offsprings of the same progeny.
Give Technical Term:
Transmits characteristics from parents to offsprings.
Give Technical Term:
A single egg was fertilized by a single sperm. But twins derived from that egg were born. What is the name of such type of twins?
Complete the following sentence with appropriate word:
The physical expression of genes is called _________.
Write the functional activity of the following structure:
Genes
Multiple choice question.
Phenotypic ratio of incomplete dominance in Mirabilis jalapa.
Which one of the following is back cross?
Explain test cross with suitable example and state its ratios.
Using ______, the production of gametes by the parents, the formation of zygotes, the F1 and F2 plants can be understood.
The appearance of new combinations in the F2 generation of a dihybrid cross proves the law of ______.
Mendel was successful in his experiments because:
In which region of chromosomes does crossing over take place?
Define the following term:
Gene
Name any two genetic diseases in humans.
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.
