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प्रश्न
With the help of a chart, explain the method of sex determination in honeybees.
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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
In a human, how many chromosmes are present in a brain cell?
In a human, how many chromosmes are present in a skin cell?
The sex of a child is determined by which of the following?
(a) the length of the mother's pregnancy
(b) the length of time between ovulation and copulation
(c) the presence of and X chromosome in an ovum
(d) the presence of a Y chromosome in a sperm
Give Reason:
Why X-linked recessive diseases are more common among males than females.
Write a short note on sex determination in man.
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
Which of the following organisms has haploid number of chromosomes?
Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that
Female heterogamy is shown by
Does a male child inherit X chromosome from his father? Justify.
