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Question
State the difference between meiocyte and gamete with respect to chromosome number.
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Solution
A meiocyte is a diploid (2n) cell containing two sets of chromosomes, while a gamete is a haploid (n) cell containing only one set of chromosomes. Thus, meiocytes have double the chromosome number compared to gametes.
RELATED QUESTIONS
If centromere is situated in the middle of the chromosome, it is called ________.
(a) Metacentric
(b) Acrocentric
(c) Submetacentric
(d) Telocentric
If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?
- 9
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- 27
- 36
Sketch and label the structure of chromosome.
Briefly mention the contribution of T. H. Morgan in genetics.
Who had proposed the chromosomal theory of inheritance?
Define the Homologous chromosomes
Give an account of artificial chromosomes in the transfer of genetic material.
Short Answer Question.
Explain the chromosomal theory of inheritance.
From the following identify the statements that are CORRECT with respect to homologous and non-homologous region of X and Y chromosomes.
i. Non-homologous region of X chromosome is longer and contains more genes than that of non-homologous region of Y chromosome.
ii. X-linked genes are present on nonhomologous region of X-chromosome.
iii. Y-linked genes are present on homologous region of Y-chromosome.
iv. Crossing over occurs only between homologous regions of X and Y chromosomes.
A gene pair hides the effect of another. The phenomenon is ______.
Extra nuclear chromosomes occur in ______.
Two or more independent genes present on different chromosomes which determine nearly same phenotype are called ______.
Experimental verification of ‘chromosomal theory of inheritance’ was done by ______.
What are minisatellites?
During mitosis, chromosomes distribution to the daughter cell is ______.
Who postulated the 'Chromosomal theory of inheritance'?
How do genes and chromosomes share similarity from the point of view of genetical studies?
In a karyotype analysis, X and Y chromosomes represent sex chromosomes.
Name the scientist who discovered the X chromosome.
