The alleles of bloodtypes are: IA, IB and IO.

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Blood type is a good example of co-dominance.



Biology Notes for IGCSE 2014. Other Nutrients: Vitamins, Minerals, Fiber and Water I have always found it hard to meet the requirements of being a student. If you continue browsing the site, you agree to the use of cookies on this website. Click on the Pop-out button on the upper right corner of the pdf file to have full view or Click Here to download. The ratio of blue:brown is 1:3 Co-dominance is when a pair of alleles are neither dominant to one another.



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This is an animated PowerPoint presentation that covers section of 5.3 Genes and Inheritance of the Edexcel IGCSE Biology course.

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Section 5 - Inheritance - Blog of Biology Department of ... PPT.

There are variations in this gene called alleles. FREE (4) limey cloning revision aid. Problems of world food supplies and the causes of famine Combination of these alleles can therefore results in blood groups A, B, AB, and O.

The final result was amazing, and I highly recommend ⇒ www.HelpWriting.net ⇐ to anyone in the same mindset as me. So we will inherit There are different alleles that code for eye colour A brown eyed individual can therefore have two possible genotypes:  BB or Bb A blue eyed individual can only have one possible genotype: bbYou can use the punnet square to look at all the possible genotypes of the child. In this case, the chance of a blue eyed child is 1/4, and the chance of a brown eyed child is 3/4. As we’ve discussed above, a gene is a particular length of a DNA molecule containing a specific sequence of bases. The colour deficient gene is an abnormal gene found in the X chromosome (Xc). 6.

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Clipping is a handy way to collect important slides you want to go back to later. This is a reduction division to form haploid cells which produce gametes.

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Now customize the name of a clipboard to store your clips. This is because females have two X chromosomes (XX).The normal colour vision allele dominates the abnormal allele, so as long as the female has one normal X chromosome then they will have good colour vision. Sickle cell anaemia.

Our online Biology Bridging the Gap course on 22-23 August can help the transition from GCSE if you are about to start your A-levels. Genetic information is stored in the the form of DNA within the cell nucleus. Inheritance.

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Variation. 1 comment: seema January 5, 2017 at 6:34 PM. Let us consider a particular gene (gene A) that makes a certain protein (protein A). The PowerPoint covers the following questions: Can you recall the meaning of the following terms: dominant, recessive, homozygous, heterozygous, phenotype, genotype and codominance? FREE (2) Popular paid resources. Home Search Pdf Classification > Cells Enzymes Nutrition > > > > > Transport > > > > ... Codominance, inheritance of blood groups.

Sex inheritance depends on the presence of X and Y chromosomes.The function of DNA is to control cell function by controlling the production of proteins i.e. 8.

GCSE Biology Inheritance, variation and evolution learning resources for adults, children, parents and teachers.

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1 month ago Consider the particular length of DNA (gene) in the diagram above. ATTENTION! 9. As mentioned before, a normal human cell contains 23 pairs of chromosomes. This base sequence within the gene codes for the specific types and order of amino acids that become joined to form a protein. Hi there!