front 1 Genetics | back 1 Experimental study of hereditary/genes |
front 2 Gene | back 2 Fundamental unit of hereditary |
front 3 Genome | back 3 complement of all genes for given organism. The genetic material of a chromosome |
front 4 Mutation | back 4 A change in DNA sequence |
front 5 allele | back 5 Alt form of gene( result from mutation) |
front 6 genotype | back 6 The specific allele composition of cell |
front 7 phenotype | back 7 The outward expression of a specific genotype |
front 8 chromatin | back 8 the substance of chromosomes; now known to include DNA and chromosomal proteins |
front 9 histone | back 9 a type of basic protein that forms the unit around which DNA is
coiled in the nucleosomes of |
front 10 nucleosome | back 10 the basic unit of eukaryotic chromosome structure; a ball of eight
histone molecules that |
front 11 chromatid | back 11 one of the two side by side replicas produced by chromosome replication |
front 12 sister chromatids | back 12 the juxtaposed pair of chromatids arising from the replication of a chromosome |
front 13 dyad | back 13 – a pair of sister chromatids joined at the centromere |
front 14 tetrad | back 14 four homologous chromatids in a bundle in the first meiotic prophase and metaphase |
front 15 chiasma | back 15 a cross-shaped structure commonly observed between nonsister
chromatids in meiosis; the |
front 16 homogametic sex | back 16 the sex with (homologous) homomorphic sex chromosomes |
front 17 hemizygous gene | back 17 a gene that is present in only one copy in a diploid organism |
front 18 null hypothesis | back 18 a hypothesis that proposes no difference between two or more data sets |
front 19 recombination | back 19 the process that generates a haploid product of meiosis whose
genotype is different |
front 20 recombinant gamete | back 20 – any gamete with a genotype that differs from the genotypes of the
two haploid |
front 21 parental gamete | back 21 any gamete with a genotype identical to one of the haploid parents
that fused to |
front 22 Telomore | back 22 chromosome end |
front 23 Heterochromatin | back 23 dense chromatin |