Evolution Answers

In 2017, the US Centre for disease control and prevention reported that a woman who died in Nevada was infected with a strain of Klebsiella bacteria. The strain of Klebsiella was resistant to 26 different antibiotics. Suggest an explanation for the evolution of antibiotic resistant Klebsiella

Explain how natural selection operates to bring about evolution including references

Discuss the role of Gene Flow in evolution

1.      Which of the following statement is true about the different mechanism of evolution?

A.     Natural selection works by selecting alleles that confer beneficial traits or behaviour.

B.     Mutations introduce new alleles into a population.

C.     Allele frequencies can change as a result of gene flow

D.     All of the above

2.      Which organism first dominated the earth?

A.     Dinosaurs

B.     Fishes

C.     Plants

D.     Bacteria

1.      Which of the following situations will lead to natural selection?

A.     The seeds of the two plants land near each other and one grows longer than the other

B.     Two types of fish eat the same king of food, and one is better able to gather food than the other

C.     Male lions compete for the right to mate with females, with only one possible winner

D.     All of the above

2.      When male lions reach sexual maturity, they leave their group in search of a new pride. This can alter the allele frequencies of the population through which of the following mechanisms?

A.     Natural selection

B.     Artificial selection

C.     Recombinant DNA

D.     All of these

Explain the relationship between natural selection and evolutionary change

Role of gene flow in evolution

Fully explain how a polymorphism of a human heterozygote can be fitter than any of the two homozygotes of the particular characteristics, by referring to sickle cell anaemia

What affects the gray wolves ability to birth their offspring

Discuss the role of gene flow in evolution