The diagram shows chromosomes in the nucleus of a cell taken from the lining inside a person’s mouth - Junior Cycle Science - Question h - 2015
Question h
The diagram shows chromosomes in the nucleus of a cell taken from the lining inside a person’s mouth.
(i) How many different pairs of chromosomes are usually found ... show full transcript
Worked Solution & Example Answer:The diagram shows chromosomes in the nucleus of a cell taken from the lining inside a person’s mouth - Junior Cycle Science - Question h - 2015
Step 1
How many different pairs of chromosomes are usually found in the nucleus of a human cell?
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Answer
Humans typically have 23 pairs of chromosomes in the nucleus of each cell. This totals 46 individual chromosomes.
Step 2
What name is given to the parts of chromosomes that control inheritable characteristics?
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The parts of chromosomes that control inheritable characteristics are called genes.
Step 3
Name one human inheritable characteristic.
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One human inheritable characteristic is eye colour.
Step 4
Name the two substances from which chromosomes are made.
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Answer
DNA (deoxyribonucleic acid)
Protein
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