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Two people who are heterozygous for retinitis pigmentosa are expecting a baby. Draw a genetic diagram to calculate the probability that the baby will have the condition. Use R for the normal allele and r for the allele for retinitis pigmentosa.

Parents Rr x RrPunnett Square Probability = 1/4
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Answered by Garry M. • Biology tutor
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What is the difference between meiosis and mitosis

Mitosis is the asexual reproduction/division of cells in a single organism which is used all over the organism. The result of mitosis is genetically identical cells and this is used for growth and repair. A ...
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Answered by Nicholas W. • Biology tutor
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Define Osmosis

The net movement of water from a place of high concentration to low concentration through a semi-permeable membrane.
Answered by • Biology tutor
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Explain the difference between a passive process and an active process.

A passive process occurs without utilising any energy.An active process requires the presence and utilisation of energy to take place.
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Describe the action of competitive inhibitors

Competitive inhibitors permanently halt enzyme action by occupying the active site of the enzyme. They are specific to a particular enzyme due to their specific primary, secondary and tertiary structure.
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Answered by Sarah L. • Biology tutor
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