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Biology
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Outline the use of polymerase chain reaction (PCR) to copy and amplify minute quantities of DNA.

PCR is a way of producing large quantities of a specific target sequence of DNA.

It is useful when only a small amount of DNA is available for testing  (e.g. crime scene samples of blood, seme...

ZK
9857 Views

Explain that female carriers are heterozygous for X-linked recessive alleles.

·      An individual with a recessive allele for a disease condition that is masked by a normal dominant allele is said to be a carrier

ZK
6830 Views

Define sex linkage

Sex linkage refers to when a gene controlling a characteristic is found on a sex chromosome (and so we associate the trait with a predominant gender)

·      Sex-lin...

ZK
5693 Views

What's the difference between an animal cell, a plant cell and a bacterial cell?

There are a few differences that you can use to tell apart or describe these types of cells.

The first distinguishing feature is whether the cell is eukaryotic or prokaryotic - this helps to s...

AW
Answered by Azelie W. Biology tutor
40408 Views

What are the main differences between eukaryotes and prokaryotes?

Both eukaryotes and prokaryotes are types of living cell. The types of cell you normally consider in the animal body are eukaryotes. They have a cell membrane around the outside, with a nuceus in its ...

SR
Answered by Sophie R. Biology tutor
6481 Views

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