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Meiosis

Biology

QuestionAnswer
DNA replication takes place when? interphase
Meiosis consists of 2 cell divisions called? meiosis I and meiosis II
Centrosomes(aka centrioles) migrate to where? to opposite poles of the cell
What is the pairing of homologous chromosomes called? synapsis
Crossing over points are called? chiasmata
What happens in metaphase I? Homologous chromosomes line up in the equator and sort independently
What happens during anaphase? chromosomes from each pair move to the opposite poles of the cell. The centromeres do not divide.
What is interkinesis? short interphase period may follow. No DNA replication
In prophase II, each cell is a ___________? haploid
In metaphase II, chromosomes line up how? in single file
What happens during telophase II? chromosomes decondense and nuclear membranes reform. Depending on the species, cytokinesis may occur.
Each of the four daughter cells produced by meiosis is identical or unique? unique
With respect to meiosis, when does DNA replication take place? during interphase
When does crossing over occur? late prophase I
During which phase does the nuclear membrane reform around the chromosomes? telophase I and II
What is a diploid? a cell with a complete set of chromosomes
What is a zygote? the cell formed by the union of two gametes
What are gametes? Biologists call both types of sex cells(sperm,egg) this name.
What is fertilization? when two cells merge, a sperm and an egg
What is a haploid? a cell with half the number of chromosomes as the parent
What is nondisjunction? when cells don't divide correctly
What does tetrad represent? the four cells produced by meiotic cell division
Created by: kiddb