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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
Sketch and label the structure of chromosome.
A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. Give one reason.
State the difference between meiocyte and gamete with respect to chromosome number.
Who had proposed the chromosomal theory of inheritance?
Classify the chromosomes on the basis of position of centromere.
Describe the structure of sex-chromosomes.
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.
An allohexaploidy contains
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.
Telocentric chromosome differs from acrocentric chromosome in that ____________.
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 couple has two daughters. What is the probability that the third child will also be a female?
There was a mix-up at the hospital after a fire accident in the nursery division. Which of these children belong to the parents?
Which of the following phase follows S and G2 phases of interphase?
Who postulated the 'Chromosomal theory of inheritance'?
A haemophilic man marries a carrier woman and they have a daughter. What is the probability of their daughter being haemophilic?
In a karyotype analysis, X and Y chromosomes represent sex chromosomes.
Name the scientist who discovered the X chromosome.
