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Can a man with haemophilia pass it onto a) his son or b) his grandson?

Haemophilia is a sex-linked recessive condition that causes serious bleeding problems. In the human genome there are 22 autosomal chromosome pairs and 1 sex chromosome pair. Males are always XY and females a...
HC
Answered by Heather C. • Biology tutor
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Tom is an expactant father who is worried that he will pass on his Haemophilia A, an X linked recessive disease, to his offspring. The mother is homozygous dominant. Explain why his 1st generation offspring will not be affected by the condition.

A recessive inheritance pattern means that 2 copies of the mutant allele need to be inherited for the individual to be affected. The disease is X linked, meaning the allele is only found on the X chromosome....
EW
Answered by Eilidh W. • Biology tutor
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"Describe the stages of protein synthesis"

TRANSCRIPTION: An RNA polymerase binds to non-coding DNA at the front of the gene. RNA polymerase produces a complementary RNA strand from the coding DNA of the gene. RNA strand leaves the nucleus via a nucl...
AS
Answered by Abigail S. • Biology tutor
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Explain the process of osmosis giving an example of why it is important for cell function.

This question is 4 marks. 1) osmosis is the net movement of water 2) from an area of high concentration to an area of low concentration 3) across a partially permeable membrane 4) importance: allows cells to...
AV
Answered by Amelia V. • Biology tutor
3143 Views

What is the difference between a haploid and diploid cell

A haploid cell contains half the number of chromosome, for example a haploid human cell would have 23 chromosomes as opposed to 46. These haploid cells will be the sperm or egg cell (the gametes) A diploid c...
TD
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