Gene and Chromosomal Mutation

What is the mutation in this persons chromosomes?

• There is only one X

• 7 is shaped like a hockey stick

• There's an extra 21

• 1 is too curved

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the structures in this image called?

• chromosomes

• centromere

• sister chromatids

• chromatin

Tags

NGSS.HS-LS3-1

How many chromosomes are found in each cell of your body?

• 46

• 23

• 40

• 45

What is a short segment of a DNA strand that codes for our characteristics?

• chromosome

• DNA

• RNA

• gene

Tags

NGSS.HS-LS3-1

How many pairs of chromosomes do human cells contain?

• 23

• 46

• 16

• 32

In which phase of Meiosis does crossing-over happen?

• Prophase I

• Metaphase I

• Anaphase I

• Telophase I

What effect does crossing over has in terms of traits of offspring?

• Results in identical traits of offsprings.

• Causes variation in the traits of offsprings.

• It really does nothing to the traits of offspring.

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Which of the following is a base pair?

• Adenine - Cytosine

• Cytosine - Thymine

• Deoxyribose - Cytosine

• Cytosine - Guanine

By looking at the chromosomes is this individual biologically male or female? How do you know?

• Female, because they have two X chromosomes

• Male, because they have one X and one Y chromosome

Tags

NGSS.HS-LS3-1

Why are insertion and deletion mutations so harmful?

• They change all of the codons from the mutation on down the line, which changes the amino acid sequence

• They insert things that an organism doesn't need.

• They often delete things that organisms need.

• Insertion and deletions are not any more harmful than substitution mutations.

Tags

NGSS.HS-LS3-2