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प्रश्न
How do genes and chromosomes share similarity from the point of view of genetical studies?
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उत्तर
Similarities between Chromosomes and Genes:
- Both occur in pairs.
- Both segregate at the time of gamete formation such that only one of each pair is transmitted to a gamete.
- Independent pairs segregate independently of each other in both.
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संबंधित प्रश्न
If centromere is situated in the middle of the chromosome, it is called ________.
(a) Metacentric
(b) Acrocentric
(c) Submetacentric
(d) Telocentric
Define the term ‘genome’.
Sketch and label the structure of chromosome.
How many chromosomes do drones of honey bees possess?
Name the type of cell division involved in the production of sperms by honey bees.
Short Answer Question.
Explain the chromosomal theory of inheritance.
Write the salient features of the Sutton and Boveri concept.
When two different genes came from the same parent they tend to remain together.
Write the observed phenotypic ratio.
Match the column I (Type of chromosome) with column II (name of chromosome).
| Type of chromosome | Name of chromosome | ||
| i. |  |
P. | Acrocentric |
| ii. |  |
Q. | Telocentric |
| iii. |  |
R. | Metacentric |
| iv. |  |
S. | Sub-metacentric |
Telocentric chromosome differs from acrocentric chromosome in that ____________.
Read the following statements regarding 'X and Y' chromosomes and select the correct option.
P - Due to presence of large amount of euchrornatin X chromosome is genetically more active.
Q - Due to presence of small amount of heterochromatin Y chromosome is genetically more active.
Which of the following does NOT agree with chrotnosomal theory of inheritance?
Extra nuclear chromosomes occur in ______.
In a certain taxon of insects some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are ______.
Mendel’s work was rediscovered by three scientists in the year ______.
Experimental verification of ‘chromosomal theory of inheritance’ was done by ______.
A couple has two daughters. What is the probability that the third child will also be a female?
During mitosis, chromosomes distribution to the daughter cell is ______.
Which of the following phase follows S and G2 phases of interphase?
A haemophilic man marries a carrier woman and they have a daughter. What is the probability of their daughter being haemophilic?
