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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
State Mendel’s Law of Dominance.
Give the Phenotype of the F2 generation.
Explain the Term Heredity.
Explain the Term Heterosome.
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:
Genes are responsible for genetic characters.
Choose the Odd One Out
Explain a dihybrid cross with suitable example and checker board method.
Enlist dominant and recessive characters in pea plant with respect to the position of flower, colour of seed and colour of a pod in tabulated form.
In a dihybrid cross with contrasting characters, the number of different genotypes obtained in F2 generation are ______.
The percentage of each gamete out of four different types of gametes produced by the F1 dihybrid will be ________.
Which of the following is the number of alleles for blood group in an individual?
An indvidual of genotype, Aa Bb Cc Dd is used in test cross. How many different phenotypes can appear in this progeny?
A typical dihybrid cross is carried outbetween true breeding plant with yellowround seeds and a true breeding plant withgreen wrinkled seeds. With appropriatesymbol write the genotypes of —
- Homozygous dominant and recessive parents.
- Gametes produced by both the parents.
- Gametes produced by the F, hybrid. (3)
Name any two genetic diseases in humans.
