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 23
... Based on these results , Morgan reasoned that body color and wing size are usually inherited together in specific combinations ( the parental combinations ) because the genes for these characters are on the same chromosome : [ IMAGE ] ...
... Based on these results , Morgan reasoned that body color and wing size are usually inherited together in specific combinations ( the parental combinations ) because the genes for these characters are on the same chromosome : [ IMAGE ] ...
Page 34
... Based on these assumptions , Sturtevant predicted that the farther apart two genes are , the higher the probability that a crossover will occur between them and therefore the higher the recombination frequency . His reasoning was simple ...
... Based on these assumptions , Sturtevant predicted that the farther apart two genes are , the higher the probability that a crossover will occur between them and therefore the higher the recombination frequency . His reasoning was simple ...
Page 35
... based on recombination frequencies is specifically called a linkage map . Figure 15.7 ( p . 281 ) shows Sturtevant's linkage map of three genes : the body - color ( b ) and wing- size ( vg ) genes depicted in Figure 15.6 and a third ...
... based on recombination frequencies is specifically called a linkage map . Figure 15.7 ( p . 281 ) shows Sturtevant's linkage map of three genes : the body - color ( b ) and wing- size ( vg ) genes depicted in Figure 15.6 and a third ...
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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