LE BasicGenetics Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Genes | segment of DNA on a chromosome that contains the code for a specific trait |
Chromosomes | thick threadlike structure that contains genetic information in form of DNA |
Alleles | any of several forms of a gene |
Dominant | 1 allele masks another in a hybrid mix; expressed allele is dominant |
Recessive | the trait that is hidden or not expressed when in the heterozygous form (Tt) |
Homozygous | having identical pairs of genes for any given pair of hereditary characteristics |
Heterozygous | having dissimilar pairs of genes for any given pair of hereditary characteristics |
Hybrid | having dissimilar pairs of genes for any given pair of hereditary characteristics; heterozygous |
Genotype | genetic make up of the organism |
Phenotype | appearance of the organism |
Segregation | separation of homologous chromosomes in meiosis |
Recombination | restoration of diploid number in fertilization |
Crossing over | the interchange of corresponding chromatid segments of homologous chromosomes with their linked genes |
Synapsis | the pairing of homologous chromosomes, one from each parent, during early meiosis |
Test cross | involves the breeding of an individual with a phenotypically recessive individual, in order to determine genotype of parent |
Intermediate inheritance | the phenotype of the hybrid is different from both parents |
Codominance | the phenotype of both dominant alleles is expressed (AB) |
Independent assortment | traits are inherited independently |
gene linkage | genes on the same chromosome tend to be inherited together |
sex determination | determined by the presence of the y chromosome |
autosomes | non sex chromosomes |
sex chromosomes | x and y chromosomes |
x linkage | trait is located on the x chromosome with no corresponding allele on the y |
hemophilia | inability of blood to clot |
colorblindness | inability to distinguish red/green colors; mostly in males |
mutation | change in genetic material |
nondisjunction | pair of homologous chromosomes fail to separate after synapses gametes with > or < n chromosomes (trisomy 21) |
polyploidy | form of nondisjunction that results in extra set of chromosomes; 3n |
deletion | segment of chromosome is lost |
translocation | segment of chromosome breaks off and reattaches to nonhomologous chromosome |
inversion | segment of chromosome breaks off & reattaches at new point on original chromosome resulting in a change in the order of the genes |
gene mutation | random change in the chemical nature of genetic material (DNA) |
mutagenic agent | substances that cause gene mutations (X rays, UV light, radioactive substances, formaldehyde, asbestos fibers, cigarette smoke) |
Created by:
jgarrisi
Popular Biology sets