B1 0.0 / 5 ? BiologyParts of B1GCSEOCR Created by: HannahDavyCreated on: 29-10-14 16:26 Name the 4 types of Pathogens. Bacteria, Fungi, Virus, Parasites 1 of 14 Define Allele different versions of the same gene 2 of 14 Define Geneotype type of gene there 3 of 14 Stem cells are... unspecialised 4 of 14 Chromosomes are... made of DNA 5 of 14 Genes are... sections of DNA 6 of 14 What is meant if something is recessive? Two alleles are needed in order for the characteristic to be expressed and you can be a carrier of the disease 7 of 14 Define Phenotype the physical characteristsics there 8 of 14 what is meant by the term Homozygous? both alleles are the same 9 of 14 Is Cystic Fibrosis a dominant or recessive disease? Recessive 10 of 14 what does it mean if something is dominant? Only on allele is needed for the characteristic to be expressed and you can't be a carrier of the disease 11 of 14 What are the main symptoms of cystic fibrosis? Too much mucous in lungs, breathlessness, can't digests food effectively. 12 of 14 What are the main symptoms of Huntindons disease? muscle twitching 13 of 14 how are natural clones formed (simple)? when asexual reproduction occurs 14 of 14
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