Biology9 Crossword
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
 
 
Down: 1) This is where there are different alleles for a particular feature, eg Bb..3) A long strand of DNA which contains genes inside the nucleus.4) The simplist building blocks which make up a living thing.5) The letters which represent the alleles which determine the features which a living thing will have, eg BB7) A chemical which forms a double spiral making up a chromosome.8) The features of a living thing which are controlled by genes. Across: 2) The part of a cell which contains the instructions to control how cells develop - sometimes called the 'brain' of a cell.6) A group of DNA molecules on a chromosome which control a particular featurein a living thing.9) These are the 2 parts which make up the gene which controls a particular feature in a the cell of a living thing.10) This is where the feature controlled by one of a pair of heterozygous alleles will be present in a living thing.11) This is where there are 2 identical alleles for a particular feature, eg BB.12) This is where the feature controlled by one of a pair of heterozygous alleles will not be present in a living thing.
 

 

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