Biology coursework is to find the different variations in our science class.

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Variation

There are two types of variation; Continuous and discontinuous. Continuous variation means there is a range which is quite large e.g. height and weight. Whereas discontinuous variation means only a small number of possibilities e.g. eye colour or hair colour.

The aim of this biology coursework is to find the different variations in our science class.

Results

NOTE: All graphs are on the last pages.

Analysis of graph 1 - Sex

The first graph shows the number of males and females in my random sample. As the graph display, there are 8 females and 7 males. This can not prove that there are literally more girls than boys in the class or school because this is just a random but proportional sample.

While the foetus is not yet a human, it is an equal chance that it could be a male of female. The sperm and egg cells determine the sex of the child. The genetic cross below explains this.

As you can see, females hold only x chromosomes (total of 46) whereas males hold 23 X chromosomes and 23 Y chromosomes. Meiosis occurs; the numbers of chromosomes