selective breeding

Question 1

what is selective breeding

Answer 1

breed other animals and plants for particular characteristics
used to feed increasing population
produce higher yields

Question 2

how are organisms selectively bred

Answer 2

1 decide what characteristics of the species is desirable
2 select parents with high levels of this characteristic
3 breed from these individuals
4 select the best offspring and breed again
5 repeat for many generations

Question 3

disadvantages to selective breeding

Answer 3

reduces number of alleles in gene pool which reduces variation
increases chance of inheriting disease and there may not be an organism that contains the allele for resistance causing species to extinct