biology

What does meiosis produce?

4 haploid gametes

before mitosis begins which happens before the nucleus starts dividing

DNA replicates

before the process of mitosis can start----- must occur

DNA replication

which sequence of steps is the correct order for cellular division?

prophase metaphase anaphase telophase cytokinesis

which processes occur during interphase

protein synthesis and DNA replication

a unicellular organisms mitosis serves the purpose of

reproduction

Metaphase

second phase of mitosis, during which the chromosomes line up across the center of the cell

the cell cycle what occurs after interphase

separation of chromosomes into two daughter cells

during what stage of interphase do chromosomes make a copy of themselves

synthesis

which properly traces the movement chromosomes during mitosis?

Sister chromatids line up in the center of the cell and separate to opposite ends of the cell.

characteristic is present in Offspring produced by sexual reproduction but is missing in Offspring produced by asexual reproduction

an independent assortment of parent chromosomes

mitosis

cell division in which the nucleus divides into nuclei containing the same number of chromosomes

Prophase

first and longest phase of mitosis in which the genetic material inside the nucleus condenses and the chromosomes become visible

which is less likely to be a function of mitosis

gamete development

what is the result of crossing over during meiosis?

genetic variation

benefit of meiosis when compared to asexual reproduction

in meiosis there is greater genetic variety

which distinguishes mitosis from meiosis?

in mitosis 1 nuclear division occurs in meiosis two nuclear divisions occur

interphase is the longest stage of the cell cycle because

the cell grows and metabolizes and synthesizes more genetic material

what activities occurs during interphase?

the cell makes proteins and grows in size

undergoes mitosis but not cytokinesis

the cell would have two nuclei

G2 phase

The second gap, or growth phase, of the cell cycle, consisting of the portion of interphase after DNA synthesis occurs.

karoytype

A picture of all the chromosomes in a cell arranged in pairs relative to SIZE SHAPE AND NUMBER

in multicellular organisms mitosis serves the purpose of?

growth and development

Interphase

Cell grows, performs its normal functions, and prepares for division; consists of G1, S, and G2 phases

during which stage of the cell cycle would the rate of protein synthesis be the highest?

G1

during which phase of the cell cycle does growth occur?

Interphase

Chromatin

Substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones

Cytokinesis in animal cells

The cell membrane is drawn in until the cytoplasm is pinched into two equal parts. Each part contains its own nucleus and organelles.

the law of segregation predicts which phenomenon during gemete formation

a single random allele from each pair of parent Alleles will be passed on to the gamete

Meiosis

a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.

which describes genetic information prior to the beginning of mitosis

chromatin

which structure do animal cells form during telophase and early cytokinesis

cleavage furrow

which stage precedes interphase

cytokinesis

which is true in both mitosis and meiosis

cytokinesis after nuclear division

which event occurs during cytokinesis

cytoplasm divides

cytokinesis in plant cells

divide from inside out using a cell plate in middle of cell. cell plate forms.

Cytokinesis

division of the cytoplasm to form two separate daughter cells

Anaphase

the third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles

cells do not begin mitosis without passing several key checkpoints in interphase why are these checkpoints necessary

they ensure the DNA and organelles are properly replicated

what is the purpose of crossing over in meiosis

to create new combinations of alleles on homologous chromosomes

what is the result when a single cell reproduces by mitosis

two cells with genetic material identical to the parent cell

what are the end products of mitosis

two identical nuclei

S phase

The synthesis phase of the cell cycle; the portion of interphase during which DNA is replicated.

what does mitosis create?

2 diploid somatic cells

Telephase

4th phase of cell division. the chromosomes become longer, thinner, and less distinct. the nucleur membrane forms. the neocleolus reappears and cell division is nearly complete

what form does DNA of the cell have during interphase?

Loosely wrapped around proteins forming chromatin

G1 phase

The first gap, or growth phase, of the cell cycle, consisting of the portion of interphase before DNA synthesis begins.

Stages of the cell cycle in order from beginning to end are?

interphase prophase metaphase anaphase telophase cytokinesis

sectional comes on breaks off and reattaches to the original chromosome in a reverse Direction which chromosomal mutation has most likely occurred

inversion

what would happen to a cell if cytokinesis occur?

it would divide

which of the following statement best explains the role of meiosis in reproduction?

meiosis makes it possible for zygote to have the correct number of chromosomes

why does meiosis promote genetic variability

meiosis undergoes two cell divisions producing haploid cells

which essential process do all multicellular organisms complete to create new tissue

mitosis

cytokinesis takes longer in plant cells than in animal cells because

plants have cell walls