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27 Cards in this Set

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characteristic chromosome complement of a eukaryote species
karyotype
Characteristics include short stature, webbed neck, shield chest, underdeveloped breasts and widely spaced nipples, rudimentary ovaries, brown nevi
Turner's syndrome
XO genotype
Turner's syndrome
XXY genotype
Kleinfelter's syndrome
Characteristics include tall stature, poor beard growth, minor breast development, female pubic hair pattern, and testicular atrophy
Kleinfelter's syndrome
failure of chromosome pairs to separate properly during cell division
nondisjunction
common cause of changes in chromosome numbers
nondisjunction during gametogenesis
sterile heifer, born twin to a bull; female with a masculinized behavior and non-functioning ovaries
freemartin
Why is a freemartin sterile?
Sterilized in utero by hormones from a male twin, becoming an infertile partial intersex.
an individual that developed from a single fertilized egg (embryo)and which is composed of both male and female genotype cells (sexual mosaic)
gyandromorph
an individual formed from two different cell lines or the fusion of two non-identical fertilized eggs (embryos), but which is composed of cells that all hve the genotype of one sex (male or female)
chimera
loop (step #4)
interphase chromatin
rosette (step #5)
leptotene of prophase I
chromatid/chromosome (step #7)
pachytene of prophase I
5 steps of Prophase I
1. Leptotene
2. Zygotene
3. Pachytene
4. Diplotene
5. Diakenesis
more than one chiasma
chiasmata
chiasmata "slips off end" during anaphase
terminalization
diploid division that results in 2 new diploid cells
mitosis
diploid division that results in 4 new haplid cells
meiosis
abnormal number of chromosomes
aneuploidy
disruptions in the normal chromosomal content of a cell, and are a major cause of genetic conditions in humans
chromosomal aberrations
Genotype XYY
Supermale
Genotype XXX
Superfemale
the means by which you can differentiate between autosomal and sex-linked traits
reciprocal cross
Spermatogonium -> Spermatid
Spermatocytogenesis, "genetic"
Spermatid -> spermatozoan
Spermiogenesis
loss of cytoplasm, addtion of flagellum and acrosome
spermiogenesis