G10 IGCSE Inheritance, Variation & Selection Quiz

The diagram shows the inheritance of sex in humans.

What is the chance of the couple’s next child being male?

• 25%

• 50%

• 75%

• 100%

Which type of cell is produced by meiosis?

• fertilised egg cell

• leaf cell

• red blood cell

• sperm cell

What will cause the rate of mutation to increase?

• increase in exposure to ionising radiation

• increase in genetic variation in a population

• increase in phenotypic variation in a population

• increase in the rate of reproduction

A feature of some plants that live in dry places is that the leaves are reduced to spines.

What is an advantage of the leaves being reduced to spines?

• decrease in photosynthesis

• decrease in transpiration

• increase in photosynthesis

• increase in transpiration

What is the transmission of genetic information from generation to generation known as?

• cell division

• inheritance

• meiosis

• mitosis

The diagram shows the chromosomes in one human cell.

What can be concluded from the chromosomes in this cell?

• The cell is from a man.

• The cell is from a woman.

• There are only 23 chromosomes per body cell.

• There are only 46 pairs of chromosomes per sex cell.

The allele for detached earlobes is dominant to the allele for attached earlobes.

Two parents are heterozygous for detached earlobes.

What is the probability of their first child having attached earlobes?

• 0%

• 25%

• 50%

• 75%

Farmers have bred Holstein-Friesian cattle to produce more milk than older breeds of cattle.

Which process was used to produce these cattle?

• adaptation

• genetic engineering

• natural selection

• selective breeding

Scientists have produced yellow rice called Golden Rice. Golden Rice has been produced by the insertion of genes into rice plants.

What is involved in the production of Golden Rice?

• genetic engineering

• mutation

• natural selection

• selective breeding

The diagram shows the formation of new diploid cells.

What do arrows X and Y represent?

• X = duplication of chromosomes; Y = meiosis

• X = duplication of chromosomes; Y = mitosis

• X = meiosis; Y = duplication of chromosomes

• X = mitosis; Y = duplication of chromosomes