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We've learned a bit about DNA and genes but how does inheritance work?

Okay so, so far you've probably covered a bit about DNA, how it's stored in chromosomes and what genes are for. Inheritance is now simply about how a gene that comes from your mum and a gene that comes from ...
AH
Answered by Athif H. • Biology tutor
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State one similarity and one difference between homologous chromosomes.

Homologous chromosomes pair up during meiosis and contain one paternal and one maternal chromosome. So, these chromosomes are the same length, have the same centromere loci and contain the same sequence of g...
PL
Answered by Phoebe L. • Biology tutor
20472 Views

Describe the process of mitosis

The cell is initially in interphase, where the organelles double, DNA replicates and protein synthesis occurs.Prophase: Chromosomes condense, mitotic spindle begins to form, the nuclear envelope breaks down....
DH
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How does vaccination confer immunity to a person?

The dead or inactive form of the pathogen stimulates the adaptive immune system. It forces white blood cells to form antibodies against the pathogen, so that if a future invasion by the same pathogen was to ...
AJ
Answered by Anushka J. • Biology tutor
2969 Views

Q4: Some small organisms do not have a specialised gas exchange system like humans. Instead they absorb oxygen through their skin. What is this process called? • Transpiration • Respiration • Diffusion • Photosynthesis

The answer is Diffusion. This is random movement of a substance from an area of high concentration (the air) to a region of low concentration (inside the organism). In this case, the substance diffusing woul...
RT
Answered by Rebecca T. • Biology tutor
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