ch 8.txt

What do we call condensed DNA with associated proteins?

What phase of the cell cycle occupies most of an average cell's life?

During which stage of the cell cycle is DNA replicated

Are the products of mitosis diploid or haploid?

Are the products of meiosis diploid or haploid?

What are diploid cells?

Which phase is responsible for cell growth?

Diploid is to somatic cell as haploid is to what?

What do we call chromosomes exchanging corresponding segments of DNA?

During cell division, the DNA in eukaryotic cell is tightly packed and coiled into structures called

During cell division, the DNA in eukaryotic cell is tightly packed and coiled around structures called

Between cell divisions, the DNA in a eukaryotic cell is uncoiled and spread out; in this form it is called

the chromosomes of most prokaryotes consist of proteins and

Humans have 46 chromosomes in all cells except sperm and egg cells. How many of these chromosomes are autosomes?

If an organism has a diploid or 2n number of 16, how many chromosomes do its sperm cells or eggs cells contain

prokaryotic cells reproduce by a process called

in eukaryotic cells, DNA is copied during a phase of the cell cycle called

the cytoplasm of a eukaryotic cell divides by a process called

the fibers that extend from centrosome to centrosome during mitosis are

spindle fibers are a type of

in the G0 phase, what happens?

during synapsis what happens?

during crossing-over, portions of chromatids do what?

in which phase of meiosis do tetrads form?

When do chromatids spearate into opposite poles of the cell?

In oogenesis, a diploid reproductive cell divides meiotically to produce

what are two ways in which genetic recomination occurs during meiosis

the symbol for haploid

the symbol for diploid

how many divisions are in mitosis?

how many divisions are in meiosis?

meiosis produces

meiosis occurs where?

male gonads

female gonads

in prophase I, homologues pair up with one another along entire lengths to form a bundle of four chromatids which is called a

crossing over results in

what do tetrads do in metaphase I

homologues in anaphase I do what and move where along what

male products of meiosis

female products of meiosis

term for meiosis in males

term for meiosis in females

chromatids of each chromosome separate at the centromere in what step of mitosis?

when does DNA coil into chromosomes

when do spindle fibers disassemble

kinetochore fibers move chromosomes to the cell's center in what stage of mitosis mitosis

centrosomes appear next to the disappearing nucleus in what step of mitosis

when does a nucleus form in each new cell

what is a picture of all chromosme pairs

when do chromatids move toward opposite poles of the dividing cell

when do spindle fibers radiate from the centrosomes

when does a nuclear envelope form around each set of new chromosomes

uncontroled cell growth

what are three factors that could cause cancer?

What divides cells during cytokinesis in plants

What divides cells during cytokinesis in animals

two x chromosmes

x and y chromosme

what are the human sex chromosmes

what are sperm and egg cells examples of

rod-shaped sturctures made of DNA and proteins

proteins which DNA is wrapped tightly around in eukaryotic cells

one half of a chromosome

the point where two chromatids are attached to make a chromosome

uncondesed, less tightly packed DNA-protein complex

last chromosome that determines the sex of an organism

chromosomes that carry the genes of organisms

two copies of the same autosome

a picture showing the chromosomes

cells having two sets of chromosmes; produced by MITOSIS

cells having one set of chromosomes; produced by MEIOSIS

cell division in prokaryotic cells

eukaryotic cell division that results in new cells with indentical genetic material to its parents; produces diploid cells

eukaryotic cell division that results in new cells with half the number of chromosomes than its parents; produces haploid cells

production of offspring from one parent

a haploid reproductive cell formed in Meiosis

the time between cell divisions

process where the cell divides at the cytoplasm

first stage of mitosis; coiling of DNA; disappearing nucleus; forming of spindle fibers

made of microtubules

second phase of mitosis; chromosomes move to the center of the cell

third phase of mitosis; chromatids separate at the centromere and move towards opposite poles

fourth step of mitosis; chromosomes reach opposite poles; spindle fibers dissasembles; nucleus is recreated

spot where cells divide during cytokinesis in ANIMALS

spot where cells divide during cytokinesis in PLANTS

the pairing of homologous chromosomes in meiosis

each pair of homologous chromosomes in synapsis

portions of chromatids break off and attach to adjacent chromatids on homologous chromosomes

a new mixture of genetic material in meiosis created after crossing-over

the random separation of the homologouse chromosomes in Anaphase I

the production of sperm cells

the production of mature egg cells

three products of oogenesis that eventually regenerate

the production of offspring through meiosis and the union of a sperm and an egg