Variation

Which characteristic of bacteria displays discontinuous variation?

May/June 2017

Which human characteristics display continuous variation and which show discontinuous variation?

May/June 2018

The table presents the differences in foot length among several students. Which row identifies this type of variation and gives its cause?

May/June 2018

What does genetically identical mean?

May/June 2019

Describe and compare a gene with an allele.

May/June 2019

Which human characteristic shows discontinuous variation?

May/June 2022

Which row gives examples of continuous and discontinuous variation in humans?

May/June 2022

The graph illustrates the percentage of the population that has the different ABO blood groups in one region. How does the graph indicate that variation in ABO blood groups is discontinuous?

May/June 2024

Three of the four graphs displayed were drawn from data gathered on how specific characteristics vary within a population. Which graph was not drawn from this type of data?

May/June 2024

Which row identifies the factors responsible for continuous and discontinuous variation?

May/June 2025

Fig. 3.1 illustrates the distribution of blood groups within a country's population.

Oct/Nov 2015

Explain what is meant by each term below and give one example of each: discontinuous variation continuous variation

Oct/Nov 2018

The diagram illustrates how a human characteristic, $X$, is distributed within the population. What is characteristic $X$?

Oct/Nov 2020

Which human characteristic displays discontinuous variation?

Oct/Nov 2020

Can you give one example of discontinuous variation in humans?

Oct/Nov 2021

A scientist collects four pairs of samples from a wild cherry tree. In which pair of samples might there be cells with different genotypes?

Oct/Nov 2023

Dust may irritate receptor cells in the lining of the nose or throat, which can set off a sneeze. When sneezing occurs, air is expelled from the lungs forcefully and the eyelids shut.

Oct/Nov 2023

State one example of discontinuous variation in humans.

Oct/Nov 2024

Every organism within the same species displays variation. Several characteristics of different kinds of variation are given. Which statements describe discontinuous variation?

Oct/Nov 2025

Which of the following are examples of continuous variation? 1 the length of seedlings 2 the mass of bananas 3 human skin colour

Oct/Nov 2025

A student examined a plant in which some stems carried flowers and other stems did not have flowers. The student took one leaf from a stem with flowers and one leaf from a stem with no flowers. Fig. 3.1 shows the two leaves. Leaf from stem with flowers: magnification \times1. Leaf from stem with no flowers: magnification \times2.

Oct/Nov 2025