Watson and Crick used this term to describe the shape of DNA.
What is a double helix?
100
He is credited with the discovery that the amount of G's was roughly equal to the amount of C's (and A's with T's) in several samples of DNA.
Who is Erwin Chargaff?
100
What does DNA stand for?
Deoxyribonucleic Acid
100
This is where DNA replication takes place.
What is the nucleus?
100
the types of mutations that occur in DNA are?
What is deletion, insertion, substitution?
200
The sugars and the phosphates.
What is the "backbone of a DNA molecule"?
200
She used X-Ray diffraction to make images of DNA
Who is Rosalind Franklin?
200
This is a subunit that consists of a sugar, a phosphate, and a nitrogen base.
What is a nucleotide?
200
This is where replication takes place.
What is the nucleus?
200
This genetic disorder includes an extra copy of chromosome 21.
What is Downs Syndrome?
300
The 4 bases of DNA
Adenine
Thymine
Cytosine
Guanine
300
These 2 scientists were working on the DNA structure about the same time as Franklin.
Who are Watson and Crick?
300
What does RNA stand for?
Ribonucleic acid
300
When scientists can manipulate individual ones within an organism.
What is the genetic engineering?
300
Hemoplilia causes what issue in the blood?
What is clotting factor?
400
A (nitrogenous) base, a sugar, and a phosphate.
What are the 3 parts of a nucleotide?
400
These scientists concluded that DNA must look like a long, twisted ladder.
Who are Watson and Crick?
400
A cell organelle composed of RNA and protein; the site of protein synthesis
What is ribosome?
400
List 3 things that scientists have genetically engineered.
What is: medicine, foods, fabrics?
400
3 possible consequences to changes in DNA
What are, improved trait, no change, harmful trait
500
During replication of DNA, explain the process how a DNA molecule gets copied.
DNA splits down the middle where the bases meet. As the bases on the original strand are exposed complementary nucleotides are added to each side of the ladder.
500
What were the 2 things scientists already knew about DNA?
1st- Must give directions for maintaining cells
2nd- Must be copied every time the cell divides
500
A change in the nucleotide-base sequence of a gene or DNA molecule
What is a mutation?
500
Complete the complementary DNA code
GTTACAAGCCGAT
What is: CAATGTTCGGCTA?
500
Define clone
What is a new organism that has an exact copy of another organism's genes.