Genetics Key Words 5.0 / 5 based on 3 ratings ? BiologyDNA, genetics and evolutionA2/A-levelOCR Created by: Zoe HartCreated on: 22-12-13 15:06 26835411079 Across 1. Change to the sequence of nucleotide bases in DNA (8) 6. The point where homologous chromosomes attach when crossing over (7) 7. A characteristic where both alleles contribute to the phenotype (10) 9. A characteristic in which the allele responsible s only expresed in the phenotype if there is no d******* allele present. (9) Down 2. Strands of replicated chromosome joined by a centromere and separate in cell division to become individual chromosomes (9) 3. The physical expression of genes (9) 4. The same genes, at the same locus, but different alleles and are therefore equivalent but not identical (10) 5. Characteristic in which the allele responsible is expressed in the phenotype, even those with heterozygous genotypes (8) 8. Nuclear division to form four genetically different haploid cells (7) 10. A length of DNA that codes for a specific polypeptide (4)
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