Review Paper SA1 - Chapter 3 Genetics

What is the scientific word that refers to the differences within a species?

• variation

• characteristics

• features

• inheritance

What causes variation?

• inherited factors only

• environmental factors only

• inherited and environmental factors

Which two characteristics show variation as a result of inherited factors only?

• blood group

• pierced ears

• number of freckles

• natural eye colour

• height

Which two characteristics show variation as a result of environmental factors only?

• blood group

• pierced ears

• Scar

• natural eye colour

• height

Which two characteristics show variation as a result of a combination of both inherited and environmental factors?

• blood group

• pierced ears

• number of freckles

• natural eye colour

• height

For which type of variation can a measurement have any numerical value?

• continuous variation

• discontinuous variation

For which type of variation are differences grouped into categories?

• continuous variation

• discontinuous variation

If you were to investigate the height of everyone in your class, what type of data would you be gathering?

• continuous variation

• discontinuous variation

If you were to investigate the eye colour of everyone in your class, what type of data would you be gathering?

• continuous variation

• discontinuous variation

Which three features show discontinuous variation?

• blood group

• height

• foot length

• eye colour

• gender