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प्रश्न
Name the type of cell division involved in the production of sperms by honey bees.
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उत्तर
The sperms in honey bee are produced by mitosis.
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संबंधित प्रश्न
Sketch and label the structure of chromosome.
A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. Give one reason.
Explain the types of chromosomes on the basis of position of centromere.
Classify the chromosomes on the basis of position of centromere.
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.
The A and B genes are 10 cm apart on a chromosome. If an AB/ab heterozygote is test crossed to ab/ab, how many of each progeny class would you expect out of 100 total progeny?
A B B C C D E F G H I
From the above figure identify the type of mutation and explain it.
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 |
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.
From the following identify the INCORRECT statement/s with respect to the chromosomes.
i. Chromosomes are capable of self replication and play vital role in heredity, mutation, variation, and evolutionary development of eukaryotic species.
ii. Chromosomes are visible during cell division.
iii. Chemically eukaryotic chromosomes are made of mRNA, histone and non-histone proteins.
iv. The number of chromosomes varies within the population of a particular species.
A plant having the genotype AABbCC will produce ______ kinds of gametes.
Extra nuclear chromosomes occur in ______.
Extranuclear inheritance is a consequence of presence of genes in ______.
Two or more independent genes present on different chromosomes which determine nearly same phenotype are called ______.
Mendel’s work was rediscovered by three scientists in the year ______.
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.
Who postulated the 'Chromosomal theory of inheritance'?
Discuss in detail the contributions of Morgan and Sturvant in the area of genetics.
