Genetics-Notes

Multiple Choice

The shape of DNA is known as a

• Double Helix

• Double Axel

• Double Arch

• Double Pyramid

• Double Hexagon

The Nitrogen bases make up the steps and the sugar-phosphate is the sides. The shape is a double helix.​

​

​

​Some text here about the topic of discussion.

​DNA is like a twisted ladder

​

Multiple Choice

How many different nitrogen bases are found in DNA?

• 1000's

• 100's

• 50

• 4

• There are only 4 different nitrogen bases in DNA

• Adenine, Cytosine, Guanine, and Thymine

• The way the bases are arranged determine what the code is.

Multiple Choice

What molecules make up the outside of the DNA double helix?

• Nitrogen-Phosphate base

• Nitrogen base- sugar

• Sugar-Phosphate

• Cytosine-Guanine

The sugar-phosphates hold the DNA together, but the nitrogen bases are the code for proteins.​

​

​

​Some text here about the topic of discussion.

​Sugar-Phosphate make up the DNA backbone

​

Multiple Choice

The physical appearance from your gene combination is called

• A genotype

• A phenotype

• Dominance

• Recessiveness

Phenotypes are the physical appearance created by gene combinations. The Genotype is a written expression showing both genes​

​

​

​Some text here about the topic of discussion.

​Phenotypes vs. Genotypes

​

Multiple Choice

A gene that can overpower another gene for the same trait is called __.

• Inheritance

• Alleles

• Dominant

• Recessive

Every trait like hair color, is controlled by at least 2 genes (1 from each parent). Dominant genes will show over the recessive.​

​

​

​Some text here about the topic of discussion.

​Dominant shows up over recessive

​

Multiple Choice

If a human somatic cell has 46 chromosomes in it, how many chromosomes are found in a gamete?

• 92

• 46

• 23

• 0

Multiple Choice

DNA is a set of instructions for what molecule?

• Proteins

• Lipids

• SUgars

• Carbohydrates

Multiple Choice

Whay branch of Biology deals with heredity and DNA?

• Heredity

• Genetics

• DNA

• Genes

• Nucleotides