Home
Class 12
BIOLOGY
A breed of cow is mated with closely rel...

A breed of cow is mated with closely related breed for five generations. It was found that production of milk has reduced subsequently and the animals are not keeping good health. Which of the following methods of animals breeding can overcome this problem?

A

Hybridisation

B

Controlled breeding

C

Out-crossing

D

Crossing breeding

Text Solution

Verified by Experts

The correct Answer is:
C
Continued inbreeding reduces fertility and productivity. This is called inbreeding depression. This problem can be overcome by out-crossing. Out-crossing is the practice of mating of animals within the same of their pedigree upto `4-6` generations. The offspring of such a malting is known as out-cross. A single outcross often helps to overcome inbreeding depression.
Promotional Banner

Similar Questions

Explore conceptually related problems

Name the method employed in animal breeding. According to you which of the methods is best?why?

____ is the mating of closely related animals within the same breed.

Inbreeding for five generations led to production of homozygous transgenic mice.However, these homozygous males or females were infertile. Which of the following approaches is most preferable and economical to obtain heterozygous transgenic animals continuously ?

Given below are four statements (i)-(iv). Which two of the following statements are correct ? (i) It is estimated that more than 70 percent of the world livestock population is in India and China. (ii) Stringent cleanliness and hygiene (both of the cattle and the handless) are of paramount importance while milking, storage and transport of the milk and products. (iii) Out-breeding is the breeding between animals of the same breed only. (iv) Corsses between different breeds is called inbreeding.

Animal husbandry is the science of rearing, feeding and caring, breeding and disease control of animals. It ensures supply of proper nutrition to our growing population through activities like increased production and improvement of animal products like milk, eggs, meat, honey, etc. a. Poultry production depends upon the photo period. Discuss

Animal husbandry is the science of rearing, feeding and caring, breeding and disease control of animals. It ensures supply of proper nutrition to our growing population through activities like increased production and improvement of animal products like milk, eggs, meat, honey, etc. b. Polyculture of fishes is of great importance.

Assertion : A single outcross often helps to overcome inbreeding depression. Reason : Out-crossing is best breeding method for increasing milk productivity.

Match the terms given in column I with their descriptions given in column II and select the correct option from the codes given below. {:(,"Column-I",,"Column-II"),((A),"Out-crossing",(i),"Mating of closely related individuals within the same breed"),((B),"Interspecific hybridisation",(ii),"Mating of animals of same breed but having no common ancestors on either side of their pedigree for 4-6 generations"),((C),"Cross-breeding",(iii),"Mating of animals of two different species"),((D),"Inbreeding",(iv),"Mating of animals belonging to different breeds"):}