How Many Chromosomes Do Drones of Honey Bees Possess? - Biology


How many chromosomes do drones of honey bees possess?



Drones of honey bee possess 16 chromosomes.

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2014-2015 (March) All India Set 1


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?

  1. 9
  2. 18
  3. 27
  4. 36

What is gene pool?

Define the term ‘genome’.

Sketch and label the structure of chromosome.

Distinguish between X andY chromosomes. (Mention any 'two' points.) 

Explain the types of chromosomes on the basis of position of centromere.

Name the type of cell division involved in the production of sperms by honey bees.

Choose the correct options of the following question:

Study the given monohybrid cross:

A test cross for this Fj will be:

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.

Explain codominance in colour coat in cattle with checker board method.

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?

Genes G S L H are located on the same chromosome. The recombination percentage is between L and G is 15%, S and L is 50%, H and S are 20%. The correct order of genes is

If the haploid number in a cell is 18. The double monosomic and trisomic number will be

Changing the codon AGC to AGA represents

Codon – anticodon interactions occur by


From the above figure identify the type of mutation and explain it.

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.

If you cross dominant genotype PV/PV male Drosophila with double recessive female and obtain F1 hybrid. Now you cross F1 male with double recessive female.

What is the possible genotype in the F2 generation?

Mention the name of man-made cereal. How it is formed?

Identify the scientists who proposed chromosomal theory of inheritance.

Telocentric chromosome differs from acrocentric chromosome in that ____________.

Which of the following is a primary constriction?

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.

During cell division, spindle fibres get attached to the disc shaped structures present on the centromere are known as ______.

Identify the term that represents the degree of repetition of the primary basic number of chromosomes in a cell.

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.

At secondary constriction I, ______ becomes organized during interphase.

Chromosomal theory of inheritance was put forth by ______

A plant having the genotype AABbCC will produce ______ kinds of gametes.

A gene pair hides the effect of another. The phenomenon is ______.

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 ______.

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 ______.

Chromosomal theory of inheritance was given by ______.

Chromosome maps/genetic maps were first prepared by ______.

What would be the genotype of the parents if the offspring have the phenotypes in 1:1 proportion?

During mitosis, chromosomes distribution to the daughter cell is ______.

What do you mean by locus?

Which of the following phase follows S and G2 phases of interphase?

Who postulated the 'Chromosomal theory of inheritance'?

Genes located on same locus but having different expressions are:

Experimental verification of the chromosomal theory of inheritance was done by ______.

Which of the following sentences are correct?

1. The offspring exhibit only parental combinations due to incomplete linkage

2. The linked genes exhibit some crossing over in complete linkage 

3. The separation of two linked genes are possible in incomplete linkage

4. Crossing over is absent in complete linkage

Which of the following is sex chromosomal disorder?


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