Mitosis
DNA
Meiosis
DNA Structure
DNA Replication
100
Chromosomes line up along the middle of the dividing cell during this stage
What is metaphase?
100

Purines

Adenine and Guanine

100
If an organism's diploid number is 12, it's haploid number is
What is 6?
100
This forms a base pair with thymine
What is adenine
100
If a DNA strand has bases TACCG, it will produce a strand with these bases
What is ATGGC?
200
These help separate the chromosomes during mitosis
What are spindle fibers?
200

Pyramidines

Cytosine and Thiamine AND Uracil (in RNA)

200

What phase does DNA replication occur in prior to meiosis?

Inderphase (S phase)

200
These scientists figured out that the shape of a DNA molecule is a double helix.
What are Watson and Crick?
200
In eukaryotes, DNA is found here
What is the nucleus?
300
The structure that holds sister chromatids together is called this
What is a centromere?
300

What are the components of one DNA nucleotide

A phosphate

A deoxyribose sugar

A base (ATGC)

300

How many daughter cells are produced at the end of meiosis?

4

300
Chicken DNA contains 28%-adenine, 21% cytosine: the amount of guanine would be
What is 21%
300
This enzyme adds bases to a strand of DNA
What is DNA polymerase?
400
In eukaryotes, this breaks down during prophase and re-forms during telophase
What is nuclear envelope?
400
During replication, DNA's hydrogen bonds are 'unzipped' by this enxyme

Helicase

400
Crossing-over occurs in this phase of meiosis
What is prophase I?
400

An RNA nucleotide contains these 3 parts

What is a phosphate group, ribose sugar, and nitrogen base.

400

The Lagging is called the 'lagging' strand because it adds nucleotides in this unique way...

In groups of nucleotides called 'Okazaki Fragments'

500

In animal cells, this part connects to the spindle fibers

What is a centromere?

500

The two strands of DNA are arranged in this fashion

5' to 3' on one strand and 5' to 3' on the other strand

Anti parallel

500
This does not occur between meiosis I and meiosis II?
What is DNA replication?
500
Watson and Crick discovered the 2 strands in DNA are located like this
What is a double helix?
500

Chromatin contains proteins called these

What are histones?

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