ANTH 246 Lecture Notes - Lecture 4: Nuclear Dna, Y Chromosome, Chromosome
3 Nov 2020
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Document Summary
There are several kinds of dna in our bodies: allosomal dna (sex chromosomes) dna contained on the x and y chromosomes. Males are xy: autosomal dna all dna contained within the nucleus in chromosomes, excluding. All chromosomes are paired (2 of each chromosome), inherit 1 from each parent. Total of 22 pairs of autosomal chromosomes (44 chromosomes total: nuclear dna/genome defined as all autosomal + allosomal dna, mitochondrial dna (mtdna) dna contained within the mitochondrial of our cells. Mtdna has 16,569 base pairs vs nuclear dna has approximately 3. Mtdna is easier to handle because it"s a lot smaller than nuclear genome. Only maternal mtdna is inherited by offspring only daughters can pass mitochondrial dna to next generation. Paternal mtdna is not passed from the sperm into fertilized egg. Unlike nulcear dna which is inherited half from our mother and half from our father, mitochondrial dna is passed on only by females.
