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What is the mitochondria and what is its role within the cell?

The mitochondria is an organelle found in most cells of eukaryotic organisms, excluding some specific cells such as red blood cells. It has a double membrane and is variable in size (but usually between 0.75...
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Answered by Rosie P. • Biology tutor
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What is a genetic mutation?

A mutation is a random change in the amount of DNA or sequence of DNA nucleotides within a cell. DNA is a double helix with two polynucleotide strands joined by hydrogen bonds between complementary base pair...
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Answered by Krupa R. • Biology tutor
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What is the difference between an allele and a gene?

A gene is a section of DNA coding for a specific protein. This protein will perform a certain function within the organism. You interit two forms of each gene, one from each parent. These are known as the al...
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Answered by Yanina P. • Biology tutor
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What are the functions of the cell membrane?

The cell membrane separates the intracellular and extracellular environments. The lipid bilayer only allows small polar molecules (such as O2 or CO2), small hydrophobic molecules (fatty acids, steroid hormon...
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Answered by Francesca D. • Biology tutor
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Using the Hardy Weinberg principle, calculate the frequency of the heterozygous genotype in the population if the frequency of the dominant allele p is 0.864. Express your answer as a percentage of the population.

p 2 + 2pq + q 2 = 1.0 p + q = 1.0 1.0 - p = q 1.0 - 0.864 = 0.136 q = 0.136 Frequency of heterozygous genotype = 2pq 2 x 0.864 x 0.136 = 0.235 As a percentage of the population- 23.5%
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Answered by Helen C. • Biology tutor
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