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 39
... cells , this clustering of genes was additional evidence that genes are located on chromosomes . Each chromosome has a linear array of specific gene loci ( Figure 15.8 ) . Figure 15.8 A partial genetic ( linkage ) map of 39.
... cells , this clustering of genes was additional evidence that genes are located on chromosomes . Each chromosome has a linear array of specific gene loci ( Figure 15.8 ) . Figure 15.8 A partial genetic ( linkage ) map of 39.
Page 40
... locus indicates the number of map units between that locus and the locus for aristae length ( left ) . Notice that more than one gene can affect a given phenotypic characteristic , such as eye color . Also , note that in contrast to the ...
... locus indicates the number of map units between that locus and the locus for aristae length ( left ) . Notice that more than one gene can affect a given phenotypic characteristic , such as eye color . Also , note that in contrast to the ...
Page 56
... loci on the X chromosome . The inactive X in each cell of a female condenses into a compact object called a Barr body , which lies along the inside of the nuclear envelope . Most of the genes of the X chromosome that forms the Barr body ...
... loci on the X chromosome . The inactive X in each cell of a female condenses into a compact object called a Barr body , which lies along the inside of the nuclear envelope . Most of the genes of the X chromosome that forms the Barr body ...
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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