Karyotype Flashcards
Karyotype
it is an arranged set of chromosomes
Karyotyping
it is the process of arrangement of chromosomes
Diploid somatic cell
has 2 sets of chromosomes
Haploid sexual cell
has 1 set of chromosomes
somatic cell: Male
the cell contains 2 different sex chromosomes( l long X and 1 short Y)
somatic cell: Female
the cell contains 2 identical sex chromosomes (2 long XX)
Sexual cell contains only sex chromosome x
it could be male or female
sexual cell contains sex chromosome y
it is male
no of chrs in normal somatic cell
2n=46
number of chromosomes in a sexual cell
n=23
number of chromosomes in a cell with trisomy 21
2n+1=47
number of chromosomes in a cell with monosomy 21
2n-1=45
the chromosomal formula for normal somatic cell
46, XX or XY
the chromosomal formula for normal sexual cell
23, X or Y
the chromosomal formula for cells with trisomy 21
47, XX or XY, +21
the chromosomal formula for cells with monosomy 18
45, XX or XY, -18
