Advertisements
Advertisements
प्रश्न
Mutation alerts the hereditary material. Give reasons.
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.
APPEARS IN
संबंधित प्रश्न
A heterozygous tall plant of pea is crossed with a dwarf plant of pea.
Calculate the phenotypic ratio of the progeny.
Choose the correct answer:
Mendel was born in __________
Explain the Term Dominance.
Name the following:
The study of heredity and variation.
Name the following:
The genetic composition of an organism.
Give Technical Term:
Differences occurring within offsprings of the same progeny.
Give Technical Term:
Transmits characteristics from parents to offsprings.
Give Technical Term:
A twin consisting of a brother and a sister were born to a lady. What is the name of such a type of twins?
Complete the following sentence with appropriate word:
The small differences among individuals are called ________.
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.
Multiple choice question.
In a dihybrid cross, F2 generation offsprings show four different phenotypes while the genotypes are _______.
Multiple choice question.
When F2 phenotypic and genotypic ratios are the same, then it is an example of _______.
Which one of the following is back cross?
The word chromosome was coined by
What is allelomorph?
Using ______, the production of gametes by the parents, the formation of zygotes, the F1 and F2 plants can be understood.
A normal visioned woman whose father is colourblind married a normal visioned man. What are the probabilities of her sons or daughters to be colourblind? Explain with the help of Punnett square.
Define Alleles.
During a dihybrid cross with contrasting characters in the F2 generation, parental genotypes will appear in ______.
