Biological

Question 1

Evolution

Answer 1

The process of natural selection ensures that a species characteristics which provide an survival advantage are passed from one generation to the next

Question 2

Evolution study

Answer 2

Buss’s survey of heterosexual mate selection. Across all 37 countries studied, he found that men preferred good looks, youth and chastity, while women preferred good financial prospects, industriousness and dependability. These results suggest that certain behaviours and traits have evolved in both males and females since they promote better prospects for passing on favourable genes.

Question 3

Genes

Answer 3

Genes are passed on from one generation to the next. Genes carry information in the form of DNA, which carry instructions for characteristics, such as eye colour, intelligence, etc.

Question 4

Genotype

Answer 4

Genetic makeup which is fixed from birth

Eg- amount of melanin

Question 5

Phenotype

Answer 5

the expression of their genes which leads to the observable characteristics of a person, influences with the interaction the gene with the environment

Eg- exposure to sunlight

Question 6

Phenotype and genotype research

Answer 6

Most research in this area has used monozygotic twins because they share 100% DNA in comparison to dizygotic twins who share 50% DNA.

For example, McGuffin found that if one MZ twin has depression there is a 46% chance that the other twin will also have depression. This suggests that there is a genetic component to illnesses like depression.