Biology questions
20584 published questions with worked solutions.
- The additional circular DNA found in prokaryotes is
- Each gamete contains only one chromosome of a pair because
- X and Y-chromosomes differ in
- Which of the following statement is not correct about chromosomes?
- The genes which inherit together during crossing over
- Genes which are located on the same chromosome are
- Crossing over causes
- Linkage is an exception to Mendel's law of
- The phenomenon of exchange of segments between paternal and maternal chromosome is called
- When two genes are situated very close together in a chromosome
- When Morgan hybridized yellow bodied white eyed female to brown bodied red eyed males and intercrossed their progeny, what was...
- Genes located on non-homologous regions of sex-chromosome
- When there is absence of crossing over, the genes are
- A man carrying a sex-linked gene on his Y-chromosome will transmit this gene to
- There are 5 daughters and no son in a family. It is because
- Usually, the recessive character is expressed only when present in a double recessive condition. However, single recessive gene...
- If a colourblind man has a normal wife then,
- When a carrier women marries a normal man, then her daughters are
- A colour blind child is born to normal parents. The child is
- What are the chances that a man with X-linked disorder will pass it to his sons?