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प्रश्न
ZW-ZZ system of sex determination occurs in
पर्याय
Fishes
Reptiles
Birds
All of these
उत्तर
All of these
संबंधित प्रश्न
Write notes on sex determination in the unborn baby.
There are two sets of chromosomes in the zygote.
In a human, how many chromosmes are present in a skin cell?
E is the gene for brown eye colour and an is the gene for blue eye colour. which gene is (1) recessive, and (2) dominant?
A couple with a newborn baby is troubled that the child does not resemble either of them. Suspecting that a mixup occurred at the hospital, they check the blood type of the infant. It is type O. Because the father is type A and the mother type B, they conclude that a mixup has definitely occurred. Are they correct? Give reason for your answer.
Define the following:
Autosomes
Write the functional activity of the following structure:
Heterosomes
Explain the haplo-diploid method of sex determination in the honey bee.
What is haplodiploidy?
How many ovum are formed when a diploid cell undergoes meiosis, during oogenesis?
Which type of sex determination is observed in honey bee?
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
Which of the following determines the sex of a child?
Select the statements that describe characteristics of genes
- genes are specific sequence of bases in a DNA molecule
- a gene does not code for proteins
- in individuals of a given species, a specific gene is located on a particular chromosome
- each chromosome has only one gene
The belief that the mother is completely responsible for the sex of the child is wrong because the child
Fill the blank circles in figure and identify the sex of child A and B. 
Does a male child inherit X chromosome from his father? Justify.
A zygote which has Y chromosome inherited from the father will develop into a ______.
