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 47
... X chromosome . In contrast , sperm fall into two categories : Half the sperm cells a male produces contain an X chromosome , and half contain a Y chromosome . We 283 can trace the sex of each offspring to the moment of conception : If a ...
... X chromosome . In contrast , sperm fall into two categories : Half the sperm cells a male produces contain an X chromosome , and half contain a Y chromosome . We 283 can trace the sex of each offspring to the moment of conception : If a ...
Page 56
Neil A. Campbell, Jane B. Reece. X Inactivation in Female Mammals Although female mammals , including humans , inherit two X chromosomes , one X chromosome in each cell becomes almost completely inactivated during embryonic development ...
Neil A. Campbell, Jane B. Reece. X Inactivation in Female Mammals Although female mammals , including humans , inherit two X chromosomes , one X chromosome in each cell becomes almost completely inactivated during embryonic development ...
Page 59
... X chromosomes . If a female is heterozygous for the tortoiseshell gene , she is tortoiseshell . Orange patches are formed by populations of cells in which the X chromosome with the orange allele is active ; black patches have cells in ...
... X chromosomes . If a female is heterozygous for the tortoiseshell gene , she is tortoiseshell . Orange patches are formed by populations of cells in which the X chromosome with the orange allele is active ; black patches have cells in ...
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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