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DNA
DNA Structure
Genetics
Punnett Squares
Miscellaneous
100
Watson and Crick used this term to describe the shape of DNA.
What is a double helix?
100

The nucleotides, or building blocks, of DNA are represented by these 4 letters


What are A, T, C, G

100

If one side of a DNA molecule is ATTACG, what is the other side?

TAATGC 

100

Some genes can be hidden or covered up by another. These are considered to be-

Recessive

100

What are the threadlike structures of DNA that carry genes called?

Chromosomes

200
The sugars and the phosphates.
What is the "backbone of a DNA molecule"?
200

DNA is organized into segments called

What are genes
200

Where in the cell are chromosomes located?

Nucleus

200

What is the punnet square used for?

To determine the outcome of genetic crossings.

200

For some traits, only one copy of a particular gene is needed to show a given trait. These genes are referred to as-

Dominant

300
The type of bond that holds bases together in the double helix.
What is a hydrogen bond?
300

How many chromomsomes do humans have?

46 or 23 pair

300

DNA is made of repeating units called…?

What are nucleotides

300

A black chicken (BB) is crossed with a black chicken (BB). What percentage of offspring will be black?

100%

300

Why does a Punnet Square use capital and lowercase letters?

Capital = Dominant Trait Lower Case = Recessive Trait

400

A (nitrogenous) base, a sugar, and a phosphate.

What are the 3 parts of a nucleotide?

400

Where are genes located?  

In the chromosomes

400

What type of organism did Gregor Mendel use to first study heredity?

Pea Plants

400

Having dimples is dominant (D). Not having dimples is recessive. (d) Both parents are heterozygous for the dominant trait. What percentage of the children will NOT have dimples?

25% 

400

How many parents are involved in asexual reproduction?

One

500

DNA is an abbreviation for this term.

What is deoxyribonucleic acid?

500

What is 3,000,000,000 bases long?

Our genome.

3 billion bases equals approximately 3 gigabytes of storage. However, Harvard researchers were able to store 700 terabytes of data on a single gram of DNA

500

______is the genetic makeup. _________ is an organism's appearance

genotype;phenotype

500

Long ears are dominant (E) in rabbits. If one parent is homozygous dominant for the long ear trait and the other homozygours reccessive (e), what is the only possible genotype of the offspring?

Ee

500

Two dark brown rabbits have four offspring. Three of the offspring are dark and one is white. What does this tell you about the parents' genes for fur color?

Dark brown is dominant and white fur is recessive. Both parents are heterozygous.