Selective Breeding – Post Lesson Practice

Copy and complete the following sentences.

1. Organisms with ______________ characteristics can be chosen to

produce the next generation in a process called _____________

breeding. Over many generations this can significantly alter and

improve _______________. (3)

2. Examples in animals are production of milk and beef in __________,

____________ in sheep and eggs in poultry. (2)

3. Some plants have been improved by selective breeding using

self – fertilisation. On the other hand, selective breeding which

uses ______ - fertilisation is called __________________. (2)

4. Problems with selective breeding are that it may be difficult to

get _____________ to occur and it takes a long time to produce

many ___________________. Inferior offspring may result as new

combinations of ____________ arise, so there is a limit to the improvements

which can be made. (3)

Total = 10