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