Lifetime and age determination

Question 1

Which sentence is wrong?
Generation interval is a weighted time period being between the birth of parents and their grandchildren

Development - qualitative changes in the characteristics, set-up, and proportions of the body as well as in the function of certain organs

Owing to metabolic discrepancies a stricture (horn ring) appears on the horns

Growth - in general, a quantitative increase in live weight and in size up to the full development of the body

Answer 1

Generation interval is a weighted time period being between the birth of parents and their grandchildren

Question 2

What is valid for the following statement: an animal is ready for reproduction, if its use as breeding animal does not endanger itself as well as its progeny?

Answer 2

breeding maturity

Question 3

Which activity is not part of the domestication?

Answer 3

hunting

Question 4

Which statement is not true?
Early mature type of cattle are bred firstly over 2 years of age

Early mature cattle calve firstly from 2 years of age

Medium early mature type of heifers have the first delivery at 3 years of age

Late mature type female cattle are bred firstly over 3 years of age

Answer 4

Early mature type of cattle are bred firstly over 2 years of age

Question 5

Which is not true generally in the change of reproductive features on the course of domestication?

Answer 5

an increase of sexual dimorphism

Question 6

Which role of the domestication is false?

Choose one

it made mankind more or less independent of climate and natural resources

it was a milestone of the development of human biology, history and culture

man could put the nature more and more into his service with less and less limitation

domestication diminished the area of human life

Answer 6

domestication diminished the area of human life

Question 7

Which statement is false?

Choose one

Re-domestication: when a feral population is used as a domestic one again (e.g. ostrich)

Mating between domestic form and wild ancestor is not possible.

The monophyletic theory supposes that only one wild species was domesticated

According to the polyphyletic theory more than one wild ancestral species were behind the domestic form

Answer 7

Mating between domestic form and wild ancestor is not possible

Question 8

Which is not a grade of domestication?

Answer 8

reproduction

Question 9

How do you call the species which is returning back to the original habitat?

Answer 9

preserved