BIOL 1090 Lecture Notes - Lecture 7: Dosage Compensation, Barr Body, Y Chromosome
2 Mar 2018
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Document Summary
Each species has a characteristic set of chromosomes, comprised of both autosomes autosomes chromosomes. Autosomes: any chromosome that is not a sex chromosome. In meiosis: males are the xy chromosomes pair via dna at the ends. Individual chromosomes become visible during cell division; between divisions they form a diffuse network of fibers called chromatin. Diploid somatic cells have twice as many chromosomes as haploid gametes. Sex chromosomes are different between the two sexes, whereas autosomes are the same. The meiotic behavior of chromosomes is the basis for mendel"s principles of. The meiotic behavior of chromosomes is the basis for mendel"s principles of segregation and independent assortment. Chromosomal basis of mendel"s principles of segregation and independent assortment. Alleles of a single gene segregate from each other. Alleles of two different genes resided on chromosomes. The disjunction of chromosomes during meiosis is responsible for the segregation and independent assortment of genes.
