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प्रश्न
Give Reason:
Why X-linked recessive diseases are more common among males than females.
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उत्तर
Because females have two copies of the X-Chromosome and males have only one X- chromosome.
संबंधित प्रश्न
If X chromosome is inherited from mother and Y from father, the offspring will be male.
Differentiate between male and female heterogamety.
Which of the following is an example of ZW – ZZ type of mechanism of sex determination?
Fill in the following blank with suitable word :
The...............chromosomes for a ............are XX whereas that for a ..............are XY.
In a human, how many chromosmes are present in an egg which has just been produced by the ovary?
Does genetic combination of mother play a significant role in determining the sex of a new born baby?
- E is the gene for brown eye colour and e is the gene for blue eye colour. Which gene is (i) recessive, and (ii) dominant?
- Both father and mother have the genes Ee in their cells. What colour are their eyes?
- Which combination of genes in the zygote will produce children with blue eyes?
- Which combinations of genes in the zygote will produce children with brown eyes?
Choose the correct answer from the four options given below :
In a human male, a sperm will contain :
Identify the female heterogamety from the chromosomal complements given below.
ZZ/ZW type of sex determination is seen in ______.
