MEIOSIS Flashcards
what is karyotype?
an individual’s collection of chromosomes.
It is a type of cell division which results in the formation of gametes with half the number of chromosomes in the body cells.
Meiosis
The fusion of a sperm and egg to form a zygote.
Fertilization
It is a fertilized egg
zygote
It is Similar to interphase of mitosis where cell increased in size
Meiosis
Cell division that reduces the chromosome number by one-half.
Meiosis I
What are the four phase in Meiosis 1
a. prophase I
b. metaphase I
c. anaphase I
d. telophase I
Longest and most complex phase (90%).
Chromosomes condense.
Crossing over occurs: homologous chromosomes come together to form a tetrad.
Prophase I
It is the foursome of chromatids that forms when replicated homologous chromosomes align
Tetrad
the pairing of two chromosomes that occurs during meiosis
Synapsis
Define Metaphase I
Shortest phase
Tetrads align on the
metaphase plate.
pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and centromere location
homologous chromosome
Homologous chromosomes separate and move towards the poles.
Anaphase I
Each pole now has haploid set of chromosomes.
Telophase I
occurs and two haploid daughter cells are formed.
Cytokinesis
Prophase II
Longest and most complex phase (90%).
Chromosomes condense.
Crossing over occurs: homologous chromosomes come together to form a tetrad.
During metaphase II, the chromosomes convene on the metaphase plate.
Metaphase II
Anaphase II
The chromatids split at the centromere and migrate along the spindle fibers to opposite poles.
Each pole now has haploid set of chromosomes.
Telophase II
Cytokinesis
ccurs and two haploid daughter cells are formed.
