Top answers

What's the difference between Mitosis and Meiosis?

Mitosis is cell division which produces identical cells and Meiosis is cell division that produces Gametes for sexual reproduction.
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Answered by Scarlett K. • Biology tutor
3826 Views

Identify the four chambers of the heart?

Left Atrium, left ventricle, right atrium and right ventricle
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Answered by Scarlett K. • Biology tutor
3067 Views

Why do large organisms need specialised exchange systems and what are the features of an efficient exchange surface?

Large organisms have-High metabolic activity (used in movement, respiration, reproduction etc)Large distance between cells and the incoming oxygen that they requireA very small surface area to volume ratio m...
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Answered by Abigail J. • Biology tutor
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What is the use of membranes within the cell?

Membranes within the cell are used in compartmentalisation for numerous reasons- one being to allow processes to occur separately in different organelles without interacting and affecting other processes, wh...
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Answered by Abigail J. • Biology tutor
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In humans, cystic fibrosis is caused by a recessive allele, f. A man and a woman are both heterozygous for the cystic fibrosis allele. What is the probability that they will produce a girl who has cystic fibrosis?

The genotype for someone heterozygous for the cystic fibrosis allele would be Ff . Thus the father’s genotype (including sex chromosomes) would be FfXY and the mother’s would be FfXX . In order to work out t...
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Answered by Yasmin M. • Biology tutor
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