Selection

What is the process of selecting individuals with certain characteristics to live by human or nature?

• Variation

• Adaptation

• Selection

• Mutation

In natural selection, what is the selection agent?

• Climate

• Predators

• Environment

• Humans

Which type of natural selection favors intermediate phenotypes and acts against extreme phenotypes?

• Stabilising selection

• Directional selection

• Random selection

• Disruptive selection

What is the result of natural selection in terms of alleles?

• Favourable alleles are passed on, less favourable alleles become eliminated

• All alleles are passed on to the next generation

• New alleles are created

• All alleles become dominant

What is the process of selective breeding of domesticated plants and animals to encourage the occurrence of desirable traits?

• Hybridization

• Artificial selection

• Genetic modification

• Natural selection

Which type of artificial selection involves mating between genetically similar individuals?

• Interbreeding

• Inbreeding

• Crossbreeding

• Outbreeding

What is the disadvantage of inbreeding in artificial selection?

• Increase in heterozygosity

• Decrease in harmful genes

• Increase in population's ability to survive

• Increase in homozygosity

In artificial selection, who is the selection agent?

• Humans

• Environment

• Climate

• Predators

Which example illustrates directional selection?

• Human birth weight

• Variety of beak size of black-bellied seed cracker finches

• Breeding of domesticated dogs for fashion

• Self-fertilisation in plants

What is the result of disruptive selection?

• Favour both extremes phenotype and act against intermediate phenotype

• Favour intermediate phenotypes and act against extreme phenotypes

• Favour all phenotypes equally

• Favour one extreme phenotype and act against the other extreme phenotype