Biology, Pages 274-287Neil Campbell and Jane Reece's BIOLOGY remains unsurpassed as the most successful majors biology textbook in the world. This text has invited more than 4 million students into the study of this dynamic and essential discipline. |
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Page 34
... Sturtevant hypothesized that recombination frequencies calculated from experiments like the one in Figures 15.5 and 15.6 depend on the distances between genes on a chromosome . He assumed that crossing over is a random event , and thus ...
... Sturtevant hypothesized that recombination frequencies calculated from experiments like the one in Figures 15.5 and 15.6 depend on the distances between genes on a chromosome . He assumed that crossing over is a random event , and thus ...
Page 35
... Sturtevant proceeded to assign relative positions to genes on the same chromosomes that is , to map genes . A genetic map based on recombination frequencies is specifically called a linkage map . Figure 15.7 ( p . 281 ) shows Sturtevant's ...
... Sturtevant proceeded to assign relative positions to genes on the same chromosomes that is , to map genes . A genetic map based on recombination frequencies is specifically called a linkage map . Figure 15.7 ( p . 281 ) shows Sturtevant's ...
Page 36
... locates cn about midway between b and vg is consistent with these data , as you can prove to yourself by drawing alternative maps . Sturtevant expressed the distances 111 between genes in map units , defining one map unit. 36.
... locates cn about midway between b and vg is consistent with these data , as you can prove to yourself by drawing alternative maps . Sturtevant expressed the distances 111 between genes in map units , defining one map unit. 36.
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Common terms and phrases
Alterations of chromosome Barr body basis of recombination behavior of chromosomes body color characters Chromosomal Alterations chromosomal basis chromosome theory chromosomes during meiosis color and wing color blindness Concept Check crossover cytogenetic map deletion different chromosomes dihybrid dihybrid cross Drosophila embryonic eye color eyes in Drosophila F2 offspring Figure flies fly room frequency of recombination fruit fly gamete gamete receives Genes located genetic crosses geneticists genotype heterozygous homologous chromosomes homozygous humans inactivation independent assortment linkage map loci locus male fly mammal map units mated Mendel's laws Mendelian mitosis Morgan mutant allele nondisjunction nonhomologous chromosomes nonparental phenotypes nonsister chromatids normal ovum pair parental phenotypes phenotypic ratio physical basis polyploid protein Punnett square recessive allele recombinant chromosomes recombinant offspring recombination data recombination frequency recombination of linked red eyes segregation and independent sex chromosomes sex-linked disorder sex-linked trait specific gene Sturtevant tetraploid translocations white eyes wild-type allele X chromosome YyRr zygote