Advertisements
Advertisements
प्रश्न
Write an account of the chromosomal theory of inheritance.
Advertisements
उत्तर
Chromosomal theory of inheritance was proposed by Sutton and Boveri. Following are the postulates of the chromosomal theory of inheritance:
- Chromosomes are found in pairs in somatic or diploid cells.
- During gamete formation, homologous chromosomes pair, segregate and assort independently at meiosis. Due to this, each gamete contains only one chromosome of a pair.
- Hereditary characters are carried by chromosomes which are present in the nucleus of these gametes.
- Gametes (sperm and egg) contain all the hereditary characters. They form the link between parents and offsprings.
- The union of sperm and egg during fertilization restores the diploid number of chromosomes.
APPEARS IN
संबंधित प्रश्न
Write a note on multiple alleles considering examples of human blood groups.
Which one of the following is a true pleiotropic gene?
Short Answer Question.
Write a note on pleiotropy.
Define inheritance.
Sickle cell anaemia can be lethal in ____________ condition.
______ is an example of pleiotropy.
Calculate the the birth rate of cattle per year in a dairy farm; where there were a total of 45 cattles previously. 5 new offsprings were added due to reproduction taking the total population to 50.
ABO blood group system can be explained by ______.
Which one of the following is not a vestigial organ?
A pea plant homozygous for yellow round seed is crossed with its recessive parents. Calculate the phenotypic and genotypic ratio with the help of a checkerboard.
