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 Linear strand of DNA found in the nucleus, carrying genes chromosome 1 of 21 Contains half the number of chromosomes of a normal cell haploid 2 of 21 The same genes, at the same locus, but different alleles and are therefore equivalent but not identical homologous 3 of 21 A characteristic where both alleles contribute to the phenotype codominant 4 of 21 Strands of replicated chromosome joined by a centromere and separate in cell division to become individual chromosomes chromatid 5 of 21 A pair of synapsed homologous chromosomes during Prophase and Metaphase I bivalent 6 of 21 The point at which a gene is located locus 7 of 21 The physical expression of genes phenotype 8 of 21 Characteristic in which the allele responsible is expressed in the phenotype, even those with heterozygous genotypes dominant 9 of 21 Contain 46 chromosomes in a human cell diploid 10 of 21 A length of DNA that codes for a specific polypeptide gene 11 of 21 Two different alleles, showing the same phenotype, but could be any combination heterozygous 12 of 21 Equivalent portions of chromosomes in a bivalent pair are swapped crossing over 13 of 21 One of two or more alternative forms of a gene allele 14 of 21 The combination of alleles possessed by an organism genotype 15 of 21 Two of the same alleles homozygous 16 of 21 Homologous chromosomes/chromatids allign randomly on the equator in Metaphase independent assortment 17 of 21 A characteristic in which the allele responsible s only expresed in the phenotype if there is no d******* allele present. recessive 18 of 21 Nuclear division to form four genetically different haploid cells meiosis 19 of 21 The point where homologous chromosomes attach when crossing over chiasma 20 of 21 Change to the sequence of nucleotide bases in DNA mutation 21 of 21
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