Biology questions
20584 published questions with worked solutions.
- An animal where male carries half the chromosomes present in female is
- In human beings, sex is determined by
- The chromosome number of a haemophilic boy will be
- What is true in case of honey bee?
- Genetic identity of human male is determined by
- A holandric gene is known for hypertrichosis (long hairs on ears). When a man with hairy ears marries a normal woman, what...
- A colourblind man, both of whose parents had normal vision and whose paternal and maternal grandparents had normal vision,...
- The ovum produced by female contains
- Criss-cross inheritance means
- The children of a colour blind woman and normal man will be
- A women has her haemophilic brother and normal parents. She marries a man who has no history of haemophilia in his family. What...
- Colour blind daughter will be born if
- A female child receives X-chromosome from
- A colourblind man (X^cY) has a colourblind sister (X^cX^c) and a normal brother (XY). What is genotype of father and mother?
- Colour blindness is a disease usually affecting man, but the factor for it is always transmitted to the children by women. This...
- In Down's syndrome, each cell has how many chromosomes?
- A colour blind man marries the daughter of a colour blind father. In their property
- If a lady who is a carrier for haemophilia marries a normal man, their children will include
- Lack of one X-chromosome leads to which kind of syndrome?
- The percentage of crossing over will be more if