Show:
Cell Cycle
What is the shape of that DNA...
Genetic Variation
Mitosis
Meiosis
100

...When the DNA is coiled up and condensed so that it can easily be sorted during cell division?

chromosome

100

How many daughter cells will mitosis produce?

2 daughter cells

100

How many daughter cells will meiosis produce?

4

200

During which phase of the cell cycle does a cell spend most of its time doing "normal" cell things like growing and making proteins?

Interphase (made up of G1, S, G2)

200

...When the DNA is in a relaxed state so that it can be used by the cell during interphase?

chromatin

200

You have no way of knowing which sperm cell will fertilize which egg. This is called _____.

random fertilization

200

How do the genetic contents of the daughter cells produced in mitosis compare to the original cell?

The genetic contents (chromosomes) are identical

200

How do the genetic contents of the daughter cells produced in meiosis compare to the original cell?

They are genetically different (containing HALF the number of chromosomes as the original)

300

The division of the cytoplasm is called _____.

Cytokinesis

300

...When there are 2 identical copies of the same chromosome attached at the center such as during prophase of mitosis?

sister chromatids

300

The random alignment of chromosomes during metaphase is referred to as _____.

independent assortment

300

In what stage do sister chromatids line up down the center of the cell in preparation of being separated?

metaphase

300

In what stage do homologous chromosomes pair up?

prophase I

400

If a cell is not correctly following the cell cycle, it could lead to the cell dividing too frequently. What could this cause?

apoptosis or a tumor (or cancer)

400
...When the identical copies of "mom's" chromosome are paired up with the identical copies of "dad's" chromosome? (ex: Dad's two copies of #5 paired with mom's two copies of #5)

homologous chromosomes

400

When sister chromatids become entangled and exchange bits of genetic material, we call it _____.

crossing over

400

In what stage does the DNA condense into chromosomes and the nuclear envelope dissolve?

prophase

400

In what stage do homologous chromosomes get pulled apart toward opposite ends of the cell?

anaphase I
500

During which specific phase of the cell cycle does a cell make a copy of its DNA?

Synthesis phase (S phase)

500
...After sister chromatids have been pulled apart and are now separate again?
chromosomes (because they are a single copy of the info on one chromosome)
500

How does crossing over during meiosis contribute to the creation of 4 genetically unique haploid cells?

The exchange of DNA between 2 chromosomes leads to an unlimited number of possible genetic combinations.

500

In anaphase, the sister chromatids are pulled toward opposite ends of the cell. Why is this important?

It ensures each daughter cell gets one copy of each chromosome.

500

In what stage do sister chromatids line up down the center of the cell?

metaphase II