Campbell Reece Biology 6th Edition
587746253 | chromosome theory of inheritance | a basic principle in biology stating that genes are located in chromosomes and that the behavior of chromosomes during meiosis accounts for inheritance patterns | |
587746254 | wild type | an individual with the normal phenotype | |
587746255 | sex-linked gene | a gene located on a sex chromosome | |
587746256 | linked genes | genes that are located on the same chromosome | |
587746257 | genetic recombination | the general term for the production of offspring with new combinations of traits inherited from the two parents | |
587746258 | parental types | offspring with a phenotype that matches one of the parental phenotypes | |
587746259 | recombinant | an offspring whose phenotype differs from that of the parents | |
587746260 | genetic map | a n ordered list of genetic loci along a chromosome | |
587746261 | linkage map | a genetic map based on the frequencies of recombination between markers during crossing over of homologous chromosomes | |
587746262 | map units | a measurement between the distance of genes; 1 map unit is equivalent to a 1% recombination frequency | |
587746263 | barr body | a dense object lying around the inside of the nuclear envelope in female mammalian cells, representing an inactivated x chromosome | |
587746264 | nondisjuntion | an accident of meiosis or mitosis, on which the members of a pair of homologous chromosomes or sister chromatids fail to move apart properly | |
587746265 | aneuploidy | a chromosomal aberration in which certain chromosomes are present in extra copies or are deficient in number | |
587746266 | trisomic | a chromosomal condition in which a particular cell has an extra copy of one chromosome, instead of the normal two | |
587746267 | monosomic | a chromosomal condition in which a particular cell has only one copy of a chromosome, instead of the normal two | |
587746268 | genomic imprinting | the parental effect om gene expression whereby identical alleles have different effects on offspring, depending on whether they arrive in the zygote via the ovum or via the sperm | |
587746269 | RECESSIVE ALLELE DISORDERS/ TRAITS | Tay-Sachs Attached Earlobe Cystic Fibrosis Sickle Cell PKU | |
587746270 | DOMINANT ALLELE DISORDERS | Polydactyly Dwarfism (Achondroplasia) Huntington's disease | |
587746271 | SEX LINKED DISORDERS (Recessive) | DMD Hemophilia Color Blindness | |
587746272 | Trisomy | Trisomy 21- Down Syndrome Trisomy 13 - Patau Syndrome | |
587746273 | Aneuploidy of Sex Chromosomes | XO- Turner Syndrome XXY- Klinefelter syndrome | |
587746274 | Structurally Altered Chromosomes | Cri du chat- Chromosome 5 CML- Translocation of 9-22 |