Lab 14:Mitosis and meiosis Flashcards
_______ and _________ are the processes by which cells reproduce.
Mitosis, cytokinesis
Mitosis reproduces the _______ and cytokinesis ________ the cytoplasm.
Nucleus, subdivides
Four phases of mitosis
Prophase, metaphase, anaphase, telophase
The period of time between nuclear division.
Interphase
Three phases og interphase
G1, S, and G2
During the _____ phase, the cell grows by replacing the cytoplasm and organelles.
G1
During the ____ phase, the DNA is replicated so the chromosomes consist of two chromatids.
S
During the ____ phase, cell growth continues, proteins are synthesized, and the centrioles are replicated.
G2
The uncoiled DNA in the nucleus when the cell is undergoing its normal activity. Its coils form the chromosomes.
Chromatin
The rod shaped structures of DNA present in the cell during cell division.
Chromosomes
The two identical strands of DNA which form a chromosome after DNA replication. Separated into two different cells during mitosis.
Chromatids.
The number of chromosomes found in eggs or sperm.It is one half the diploid number of chromosomes. 23 in humans
Haploid
Having two haploid sets of homologous chromosomes. The normal number of chromosomes in body cells. Humans have 46.
Diploid
Phase where chromosomes condense from chromatin and the cell membrane disappears.
Prophase
Phase where chromosomes line up along the cell’s equator.
Metaphase
Phase where sister chromatids on each chromosome separate, and begin to move towards the poles of the cells.
Anaphase
Phase where chromosomes reach the poles of the cell, begin to unwind, and then assume the form of chromatin.
Telophase
Phase where the division of the cytoplasm is not part of mitosis, but it usually occurs at the same time. Here, the cells divides in half. Each half receives approximately half of the cytoplasm.
Cytokinesis
_________ separates the homologous chromosomes into two different cells.
Meiosis I
__________ separates the chromatid pairs of the chromosomes into different cells.
Meiosis II
