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Edexcel GCSE Biology Topic 3 - Genetics



  Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you.

 

 • I can describe the advantages and disadvantages of sexual and asexual reproduction

 • I can describe the differences in the end result of mitosis and meiosis

 • I can recall the names of the male and female gametes in plants and animals

 • I can describe the process of meiosis

 • I can explain how to extract DNA from fruit

 • I can describe the structure of DNA

 • I can describe the structure of a chromosome

 • I can define the term gene

 • I can define the term genome

 • I can describe the structure of DNA including the nucleotide, sugar and phosphate groups

 • I can recall the different bases in DNA

 • I can describe how different sequences of DNA code for amino acids Biology only

 • I can describe the process of protein synthesis Biology only - Higher tier only

 • I can describe how variations in DNA can affect the protein being made Biology only - Higher tier only

 • I can recall that the bases C and G match up and the bases A and T match up Biology only - Higher tier only

 • I can describe the process of protein synthesis Biology only - Higher tier only

 • I can describe the process of protein folding Biology only - Higher tier only

 • I can describe the effect a mutation can have on a protein Biology only - Higher tier only

 • I can describe the effect a mutation can have on an enzyme Biology only - Higher tier only

 • I can explain non-coding DNA Biology only - Higher tier only

 • I can describe the work that Mendel did Biology only

 • I can define the term gamete

 • I can define the term chromosome

 • I can define the term gene

 • I can define the term allele

 • I can define the term dominant

 • I can define the term recessive

 • I can define the term homozygous

 • I can define the term heterozygous

 • I can define the term genotype

 • I can define the term phenotype

 • I can explain how characteristic can be controlled by genes

 • I can predict the results of a genetic cross by completing a Punnett square diagram

 • I can recall the number of pairs of chromosomes in a human body cell

 • I can recall that sex is determine by the X and Y chromosomes

 • I can describe how blood group is determined

 • I can describe the inheritance of sex-linked genetic diseases Biology only - Higher tier only

 • I can describe how phenotype can be influenced by genes and the environment

 • I can recall that difference in a population in variation

 • I can describe the factors that affect variation within a population

 • I can evaluate the outcome from the Human Genome Project

 • I can recall that variation within a population is caused by genetic mutation

 • I can recall that the majority of mutations don’t have an effect but occasionally a small mutation can have a large effect.