cytogenetics is the study of
chromosomes
sources of chromosomes (4)
Lymphocytes
sking cells
amniotic cells
bone marrow
mitotic metaphase chromosomes consists of
2 identical chromatids joined at centromere
metacentric means,
p and q arms are of equal length (medial chromosome)
submetacentric means
bulk of chromosome below centromere, q arm longer than p arm (submedial chromosome)
Acrocentric means
very little top p arm, present as sattelites
Telocentric means
centromer at top of q arm, no p arm or satellites
meiosis produces
gametes
Meiosis produces 4 … cells
haploid
maleness dictated by presence of …. not lack of …
x chromosome
y chromosome