Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution -
1. production of 'Dolly', the sheep by cloning
2. Development of organs from 'stem' cells for organ transplantation
3. Development of transgenic animals
4. Prevalence of pesticide resistant insects
The world's highly prized wool yielding 'Pashmina' breed is -
1. Kashmir sheep-Afghan sheep cross
2. Goat
3. Sheep
4. Goat-sheep cross
The best breeding method for animals that are below average in productivity in milk production is:
1. Inbreeding
2. Out crossing
3. Cross breeding
4. Interspecific hybridization
To induce follicular maturation and super-ovulation, a cow is administered a hormone with activity like:
1. FSH
2. LH
3. Estrogen
4. Progesterone
Which of the following is a freshwater edible fish?
1. Hilsa
2. Mackerel
3. Pomfret
4. Common carp
The reduced biological fitness in a given population as a result of breeding of related individuals is called as:
1.Heterosis
2.Heterozygote advantage
3 Inbreeding depression
4.Saltation
In MOET, the fertilized eggs at 8 – 32 cells stage is transferred to the surrogate rather than the genetic mother because:
1 The surrogate chosen is of a different breed from the genetic mother
2.The surrogate mother is of a younger age
3.The genetic mother is available for another round of super ovulation
4.The genetic mother is of an inferior breed
Identify the incorrect statement:
1. Inbreeding is necessary if we want to evolve a pure line in any animal
2. A single out-cross often helps to overcome inbreeding depression
3. To induce super-ovulation in MOET, the cow is administered hormone with FSH like activity
4. The genetic mother is used to transfer the fertilized eggs in MOET procedures
The generally deleterious effects caused by inbreeding are due to
1. an increase in genetic variability that disrupts developmental sequences
2. an increase in homozygosity of recessive deleterious alleles
3. an increase in allozygosity of all alleles
4. an increase in the mutation rate
The best breeding method for animals that are below average in productivity in milk production is:
1. Inbreeding
2. Out-crossing
3. Cross-breeding
4. Inter-specific hybridization
Consider the following method of breeding in animals:
I. Matings take place between same breed
II. No common ancestor is present on either side for 4 – 6 generations
III. It is the best method to improve milk production in cattle
This method of breeding is called:
1. Inter-specific hybridization
2. Cross-breeding
3. Inbreeding
4. Out-crossing
The practice of mating of animals within the same breed, but having no common ancestors on either side of their pedigree up to 4 – 6 generations, is called:
1. Inbreeding
2. Out crossing
3. Cross breeding
4. Inter-specific hybridization