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प्रश्न
With the help of a chart, explain the method of sex determination in honeybees.
उत्तर
In the honeybee, the haplodiploid sex-determination system determines the sex of the offspring. In this system, sex is determined by the number of sets of chromosomes an individual receives. An offspring developed from fertilized egg develops as a female and unfertilized egg develops in males. A female offspring shows diploid (2n = 32) number of chromosomes. Males (drones) produced by means of parthenogenesis have haploid (n = 16) number of chromosomes
SEX DETERMINATION
APPEARS IN
संबंधित प्रश्न
The human animal which has an XY pair of chromosomes is called :
(a) male
(b) hybrid
(c) female
(d) doomed
What is heterogamety ? Explain the mechanism of sex determinatin in Drosophila.
Choose the correct answer :
Human sex chromosomes are __________
Distinguish between heterogametic and homogametic sex determination systems.
Number of autosomes present in liver cells of a human female is ______.
In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is/are ______.
- large chromosome
- small chromosome
- Y-chromosome
- X-chromosome
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
Select the incorrect statement
The chromosomal constitution of a human female can be written as ______
What is the probability of a girl or a boy being born into a family? Justify your answer.
