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21 Cards in this Set

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Acrocentric
centromere near the end of the chromosome
very short arm and long arm
Hint 1. One of three types of chormosomes
Hint 2. Based on the position of the centromere
Anaphase
Fourth Stage of Mitosis
Chromosomes are pulled apart into individual chromatids
Fourth Stage of Mitosis
Autosome
Chromosomes which are the same in both sexes (same in number as well as type)
Type of Chromosome
Autosomal
Relating to Autosomes
Banding pattern
Pattern which uniquely identifies a chromosome
The same from chromosome homologs
Centromere
The regsion where the four arms of the chromosome connect
Part of the Chromosome
Chiasma
A crossing in a homologous pair of chromosomes during Meiosis I.
At a Chiasma, chromosomes trade segments.
Occurs during Meiosis I
Chomatid
One of the two visibly distinct longitudinal subunits of all replicated chrromosomes that becomes visible between early prophase and metaphase of mitosis.
Part of a chromosome
Chromatid disjunction
The separation of sister chromatids at anaphase II
Chromosome
The genetic material of a cell
It literally means "colored body," because the threadlike structures are visible under the microscope only after they are stained with dyes.
Chromosome disjunction
The separation of homologous chromosomes at anaphase I
Underlies Mendel's observation of the segragation of alleles.
Crossing over
Synonym for Chiasmata
Region where chromosomes cross and exchange segments in Meiosis Prophase I
Synonym for Chiasmata
Cytokinesis
Divsion of cytoplasm which causes one cell to split into two cells.
Dichtyotene
Female Egg Prophase II stage of Meiosis. Egg (primary and secondary oocyte) stays hear until ovulation.
Relates to Female Mammal Meiosis
Diploid
Cells that have chromsomes in pairs
Exchange
Homologous Chromosomes physically exchange parts during Meiosis I
Occurs during Meiosis I
first meiotic division
Meiosis I - Separates Homologous chormosomes
G1
First part of interphase immediately following cellular division. During G1 chromosomes remain in the single chromatid condition.
Part of Interphase part of Mitosis cycle.
G2
Last part of Interphase. Chromosomes are in the two chormatid form.
Section of Interphase part of Mitosis cycle.
Haploid
Cells which contain only one copy of each chromosome.
Number of chromosomes...
Homologs
Chromsomes which containing the same genes (not the same alles but each locus controls the same trait)