Lecture+4+Topic+III+Part+1

Lecture+4+Topic+III+Part+1 - Bivalents: Homologous pairs of...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Bivalents: Homologous pairs of chromosomes seen in the pachytene stage of prophase I of meiosis. Chiasmata : The visible crossover structures commonly observed between nonsister chromatids during the diplotene stage of meiosis. Centromeres : A specialized region of the chromosome (usually constricted) where spindle fibers attach during mitosis and meiosis. Chromatids : Two daughter strands of the same duplicated chromosome joined together at the centromeree. Upon division of the centromeree in Anaphase II, the sister chromatids separate. Haplosufficient :In heterozygotes, if the single wild type allele is sufficient to produce the wild type phenotype (haplosufficient), then the mutation is recessive. If the single wild type allele is not sufficient for the wild type phenotype (haplo-insufficient), then the loss-of-function mutation is dominant Hemizygous : A single dose of a gene. One allele of the gene is missing either because it has been deleted from one member of the chromosome pair or because it is located on the X chromosome of a XY...
View Full Document

Page1 / 22

Lecture+4+Topic+III+Part+1 - Bivalents: Homologous pairs of...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online