Genes Recap

How many chromosomes are there in the human body?

• 23

• 46

• 48

• 100

Tags

NGSS.HS-LS3-1

A unit of DNA on a chromosome that is encoded with the instructions for a single trait is called:

• Centromere

• Chromatid

• Gene

• Amino Acid

Tags

NGSS.HS-LS3-1

A _______ is a coiled structure made of DNA and proteins.

• gene

• chromosome

• homologous chromosome

• centromere

What is a mutation?

• No change in DNA

• Any change in DNA

• No change in RNA

Tags

NGSS.HS-LS3-2

What are the effects that mutations can have?

• only harmful effects

• Harmful, helpful and neutral

• only harmful and neutral effects

• environmental

Tags

NGSS.HS-LS3-2

What process occurs when DNA unzips and adds in new matching base pairs?

• DNA Photosynthesis

• DNA Replication

• DNA Mutations

• DNA coding

Where in the cell can DNA be found?

• Nucleus

• Mitochondria

• E.R.

• Ribosomes

What shape is DNA?

• Spiral

• Swirl

• X

• Double Helix

Approximately how many genes are found on 46 chromosomes?

• between 9-29

• between 1 miliion - 2 milliom

• between 20,000 - 25,000

• between 50 - 100

What are the four bases of DNA?

• Adenine, Guanine, Cytosine, and Thymine

• Adenine, Guanine, Cytosine, and Uracil