CHROMOSOMES IN MEIOSIS
Oogenesis
Process of development of haploid female gametes
Crossing Over
A condition where non-sister chromatid of homologous chromosomes exchange genes
Chromatid
A double-stranded chromosome following replication attached by a centromere
Spindle Fibers
A number of threadlike filaments formed between poles of the cell during cell division
Centromere
A structure on the chromosome that holds a pair of chromatids together during replication
Tetrad
During metaphase I the two pairs of chromatids of the homologous pair of chromosomes come together
True or False A tetrad is a paired, duplicated chromosome during Metaphase II
False
True or False Duplication of chromosomes begins after Prophase I
False
True or False Oogenesis gives one large ovum and small polar bodies, each being diploid. Spermatogenesis gives four equal sperm, each being haploid.
False
Telophase I
In the first meiotic division the cell divides into two cells
Polar Body
One of three small cells produced during oogenesis
Spermatogenesis
The production of haploid male gametes by the male parent
Prophase I
The stage in the first meiotic division where the doubled chromosomes become visible
Metaphase I
The stage in the first meiotic division where the homologous chromosomes line up as a pair
Anaphase II
The stage in the second meiotic division where sister chromatids migrate to opposite poles
Metaphase II
The stage in the second meiotic division where the chromatid pair lines up at that equator of the cell
Telophase II
The stage of the second meiotic division when the cell divides into two cells with each being haploid
Anaphase I
The stage on the frst meiotic division where sister chromatids mig
True or False A homologous pair of chromosomes is the chromosomes which influence the same genetic traits
True
True or False Crossing over gives variations in genetic material by exchange of chromatic pairs
True
True or False The sister chromatids separate and migrate to opposite poles at Anaphase II
True
True or False crossing over occurs during tetrad formation
True
Meiosis consists of () cell division with only one duplication of (). This division results in () daughter cells, each with () set of chromosomes. This division represents a reduction division; that is the diploid chromosome number of the parent cells is reduced to the () number of the daughter cells.
Two (2) Chromosomes Four (4) One (1) Haploid