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प्रश्न
How many chromosomes do drones of honey bees possess?
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उत्तर
Drones of honey bee possess 16 chromosomes.
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संबंधित प्रश्न
Define the term ‘genome’.
Who had proposed the chromosomal theory of inheritance?
Describe the structure of sex-chromosomes.
Give an account of artificial chromosomes in the transfer of genetic material.
Answer the following question.
Compare in any three ways the chromosomal theory of inheritance as proposed by Sutton and Bovery with that of experimental results on pea plant presented by Mendel.
A B B C C D E F G H I
From the above figure identify the type of mutation and explain it.
When two different genes came from the same parent they tend to remain together.
Write the observed phenotypic ratio.
Mention the name of man-made cereal. How it is formed?
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 |
Which of the following is a primary constriction?
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.
Mendel’s work was rediscovered by three scientists in the year ______.
Experimental verification of ‘chromosomal theory of inheritance’ was done by ______.
Chromosome maps/genetic maps were first prepared by ______.
Which of the following statements indicates parallelism in genes and chromosomes?
- They occur in pairs.
- They segregate during gamete formation.
- They show linkage.
- Independent pairs segregate independently.
During mitosis, chromosomes distribution to the daughter cell is ______.
What do you mean by locus?
Who postulated the 'Chromosomal theory of inheritance'?
Which of the following is sex chromosomal disorder?
In a karyotype analysis, X and Y chromosomes represent sex chromosomes.
Name the scientist who discovered the X chromosome.
