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Biology - Differences Between Organisms
Eye color is an example of genetic variation.

Biology - Differences Between Organisms

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In high school science, students will look at genetic variation and its control. This quiz looks at the differences that can be found between organisms of the same species in particular. This is partly genetic variation, such as eye color, but also environmental variation, caused by things such as diet.

Eye color can be changed using colored contact lenses. Eye color is an example of what?
Genetic variation only
Environmental variation only
Genetic and environmental variation
None of the above
True eye color is controlled by genes. Exactly which ones are involved is not yet known
Gametes contain only half the number of chromosomes other types of cells have, therefore they are what?
Diploid cells contain a full set of chromosomes
Which of the following is correct in order of decreasing size?
Cell, nucleus,chromosome, gene
Gene, chromosome, nucleus, cell
Nucleus, cell, gene, chromosome
Cell, chromosome, gene, nucleus
A lot of candidates mix up the size of chromosomes and genes, genes are small parts of chromosomes
Which of the following could account for body mass?
Genetic reasons only
Environmental reasons only
Genetic and environmental reasons
None of the above
Genes can give one organism a greater body mass than another but environmental factors like diet can create differences too
Why is plotting a line graph of foot length more appropriate than using a bar chart?
Foot length is an example of continuous variation
Feet are different shapes
Foot length is an example of discontinuous variation
Shoe size depends on foot length
Continuous variation is variation that has no limit on the value that can occur within a population. A line graph is used to represent continuous variation. Had the question been about foot (shoe) size rather than foot length, the answer would have been a histogram. Foot (shoe) sizes have only certain values
Eye color is an example of which of the following?
Continual variation
Continuing variation
Discontinued variation
Discontinuous variation
Discontinuous variation can only have certain values
A group of students carried out a survey into the blood groups. What would be the most appropriate way to show the data?
A pie chart
A line graph
An infographic
A histogram (bar chart)
Blood groups are an example of discontinuous variation. You could use a pie chart but the usual scientific way of showing ths type of data is to plot it on a histogram because it is easier to see small differences. Pie charts are better if you convert your results to percentages
Environmental variation can be caused by which of the following?
Light intensity
All three of the above
Climate and light intensity can create environmental variation in both plants and animals e.g. plants grow more slowly in a cold climate and hair goes lighter in strong sunlight
Genes are part of what?
A gene is a section of DNA, which carries coding for the cell to make a particular protein. These proteins combine to make more complex chemicals like amino acids and enzymes, needed for the organism to function
What causes inherited variation?
The new individual gets half of its genes from each parent
The new individual gets all of its genes from one parent only
The new individual has completely different genes to either of its parents
During fertilization, all of the genes change shape
Inherited variation means that the offspring resemble their parents but not exactly
Author:  Kev Woodward

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