Behavioural Genetics

Humans are made up of how many chromosomes?

• 44
  

• 23

• 46

• 50

Which of the following is true about identical twins?

• 
  They develop from a single fertilized egg that splits into two

• 
  They develop from a single fertilized egg that does not split

• They develop from two separate fertilized eggs

• They develop from two fertilized eggs that merge into one 

What is epigenetics?

• 
  the study of the structure and function of genes at a molecular level

• 
  the study of heredity and the variation of inherited characteristics.

• 
  A set of theories that attempts to explain inheritance and biological diversity

• The study of environmental influences on gene expression that occur without a DNA change

The key to survival in an environment based on natural selection involves:

• Aggression

• Size

• Adaption

• Mutation

The units of hereditary information that act as a blueprint for cells to reproduce themselves and manufacture the proteins that maintain life are:

• Chromosomes

• Genes

• DNA

• Ribosomes

A person's genetic heritage is in his or her

• Genotype

• Phenotype

• Dominant Character

• Recessive Character

If heredity is an important determinant of a specific behaviour, what prediction can we make about expression of the behaviour in identical twins reared apart compared to its expression in fraternal twins reared apart?

• Fraternal twins will express the behaviour more similarly than identical twins.

• 
  There will be little similarity in the expression of the behaviour in either set of twins.

• 
  Identical twins will express the behaviour more similarly than fraternal twins.

• The behaviour will be expressed similarly by identical twins and fraternal twins.

In adoption studies, psychologists compare the behaviour of:

• identical fraternal twins.

• family members with that of randomly selected others.

• fraternal twins with each other.

• children living with adoptive parents and children living with biological parents.

When we say that identical twins have a high concordance rate, "Concordance" means?

• percent of cases the may share the same trait

• Physical similarities shared only

• Genetic differences

• Environmental affect on genetics

The theory that our genes make us vulnerable to certain behaviors that may develop as a result of environmental stimuli is called ...

• Phenotype

• Reductionist

• Diathesis-Stress Model

• Genetics model