Genes and Chromosomes Flashcards
(18 cards)
Homologous chromosomes that are same or similar chromosomes in males and females
Autosomes
Chromosomes that are different in males and females
Sex chromosomes
XX=
female
XY=
male
Only gets 1 sex chromosome. X. Appear female but sex organs do not develop at puberty
Turner Syndrome
Get two X’s and 1 Y. Appear male but are sterile
Klinefelter Syndrome
X=
turner syndrome
XXY=
klinefelter syndrome
A gene located on one of the sex chromosomes
Sex-Linked Genes
e
Multiple alleles
r
Polygenic Traits
A trait that is caused by a gene whose expression is different in males and females
Sex-Influenced Traits
Mistakes that affect reproductive cells.
Germ mutations
Mistakes that affect body cells.
Somatic mutations
Mistakes in gene information transfer
Mutations
Involve segments, whole or sets of chromosomes
Chromosomal Mutations
d
Codominance