Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
differential regions (of sex chromosomes)
|
where most of the genes are located, not many sex genes
|
|
|
forward genetics
|
the classical approach to genetic analysis, in which genes are first identified by mutant alleles and mutant phenotypes and later cloned and subjected to molecular analysis
|
|
|
haplosufficiency
|
describes a gene that, in a diploid cell, can promote wild type function in only one copy (dose)
|
|
|
hemizygous gene
|
a gene present in only one copy in a diploid organism-for example, an X-linked gene in a male mammal
|
|
|
heterogametic sex
|
the sex that has heteromorphic sex chromosomes (eg. XY) and hence produces two different kinds of gametes with respect to the sex chromosomes
|
|
|
homogametic sex
|
the sex with homologous sex chromosomes (eg. XX or YY)
|
|
|
kinetochore
|
a complex of proteins to which a nuclear spindle fiber attaches
|
|
|
pseudoautosomal regions
|
a region on a sex chromosome that is homologous to a region on the other heterogametic sex chromosome; they act as substrates for meiotic pairing and crossing over
|
|
|
sex chromosomes
|
a chromosome whose presence or absence is correlated with the sex of the bearer; a chromosome that plays a role in sex determination
|
|
|
sex linkage
|
the location of a gene on a sex chromosome
|
|
|
SRY gene
|
the maleness gene, residing on the Y chromosome
|
