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प्रश्न
________ shows haplo-diploid type of sex-determination.
विकल्प
Pigeon
Honey bee
Parrot
Snake
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उत्तर
Honey bee
APPEARS IN
संबंधित प्रश्न
Explain the mechanism of sex determination in birds.
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.
Define the following:
Autosomes
Choose the correct answer :
Human sex chromosomes are __________
Complete the following sentence with appropriate word:
______are the alternative forms of a gene producing different effects.
Distinguish between heterogametic and homogametic sex determination systems.
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
The belief that the mother is completely responsible for the sex of the child is wrong because the child
Sex of an individual is determined by different factors in various species. Some animals rely entirely on the environmental ones, while in some other animals the individuals can change their sex during their life time indicating that sex of some species is not genetically determined. However in human beings, the sex of an individual is largely determined genetically.
- In what way are the sex chromosomes 'X' and 'Y' different in size? Name the mismatched pair of sex chromosome in humans.
- Write the number of pair/pairs of sex chromosomes present in human beings. In which one of the parent (male/female) perfect pair/pairs of sex chromosome are present?
- Citing two examples, justify the statement "Sex of an individual is not always determined genetically".
OR
Draw a flow chart to show that sex is determined genetically in human beings.
