Cell Division Flashcards
(33 cards)
what is the smallest unit of life
cell
what is the biggest organelle of a eukaryotic cell
a nucleus
what is found in the nucleus
DNA
what is DNA and what does it stand for
DNA contains genetic material and it stands for deoxy ribo nucletic acid
what does DNA look inside a nucleus
DNA looks like a double stranded latter and jumble up like a ball of yarn
what is genetic material
genetic material are genes or traits that can be passed on from parents to off springs
how does DNA grow and develop and reproduce
DNA reproduce through phases called interphase and mitosis
what happens during interphase
interphase is when DNA develops and goes through replication
what does replication mean
copy or duplicate
what happens during replication
a DNA that replicates itself and wrap up tightly and neatly into chromotid
what is a chromotid
DNA replicates itself and wrap tightly and neatly into chromotid
what is a chromosome
when DNA wraps around a protein it’s called a chromosome
how many chromosomes do humans have
humans have 46 chromosomes
how many chromosomes does each parent pass of to their offspring
23 chromosomes from each parent
each segment of DNA is known as what
gene
what does a gene contain
genetic traits
what happens during a mitosis
during mitosis chromosomes go through 5 phases
what are the 5 phases of mitosis
ph1:prophase ph2:metaphase ph3:anaphase ph4:telophase ph5:cytokinesis
what happens during each phase
phase 1:propjase-chromosomes appear
what happens during each phase
phase 2:metaphase-chromosmes line up
what happens during each phase
phase 3:anaphase:chromosomes separate
what happens during each phase
phase 4:telophase:chromosomes pinch
what happens during each phase
phase 5:cytokinesis-two new daughter cells form
how many chromosomes do humans sex cells have
23 chromosomes in each sex cell (egg or sperm)
