1. the ratio of pairs of X-chromosomes to the pairs of autosomes
2. whether the egg is fertilized or develops parthenogenetically
3. the ratio of number of X-chromosomes to the set of autosomes
4. X and Y-chromosomes
the ratio of number of X-chromosomes to the set of autosomes
1. mechanical pressure and enzymes
2. hooks and suckers
3. softening by enzymes
4. only by mechanical pressure
mechanical pressure and enzymes
1. Down's syndrome
2. sleeping sickness
3. haemophilia B
4. hepatitis B
haemophilia B
1. Cuscuta - parasite
2. Dischidia - insectivorous
3. Opuntia - predator
4. Capsella - hydrophyte
Cuscuta - parasite
1. More diversity in varieties
2. Frequency of dominant gene is more
3. Climatic conditions more favourable
4. None of the above
More diversity in varieties
1. do not show independent assortment
2. induce cell division
3. do not show a chromosome map
4. show recombination during meiosis
do not show independent assortment
1. Transfer of some genes from one bacteria to another bacteria through virus
2. Transfer of genes from one bacteria to another bacteria by conjugation
3. Bacteria obtained its DNA directly
4. Bacteria obtained DNA from other external source
Transfer of some genes from one bacteria to another bacteria through virus
1. attack (offence)
2. protection (defence)
3. both (1) and (2)
4. isolation
both (1) and (2)
1. Sigmoid
2. Hyperbola
3. Ascending straight line
4. Descending straight line
Ascending straight line
1. Predation
2. Cutting down of forests
3. Destruction of habitats
4. Hunting
Destruction of habitats