chapter 5

Question 0

Why do you traits such as height and skin color have such a wide variety of phenotypes

Answer 0

The traits are controlled by many genes

Question 1

What does it mean when a trait is controlled by multiple alleles

Answer 1

Having three or more forms of a gene that code for single trait

Question 2

List examples of human traits that are altered by the environment

Answer 2

Characteristics, Heights

Question 3

Are sex linked traits such as colorblindness more common in males or females? Explain

Answer 3

Males. the male only has to carry one for the trait to show and the female has to carry two for the trait to show

Question 4

Why do genetic counselors use pedigrees

Answer 4

It traces the inheritance of traits

Question 5

What tools (more than one) would a geneticist use to predict the probability of a baby having cystic fibrosis

Answer 5

Pedigree charts and punnet squares

Question 6

Compare the DNA of two clones

Answer 6

Identical

Question 7

What is the purpose of the human genome project

Answer 7

To identify the DNA sequence of every gene in the human genome

Question 8

What is a genome

Answer 8

All the DNA in one cell of the organism

Question 9

Where are sex linked genes located

Answer 9

X and Y chromosomes

Question 10

What technique of selective breeding would a farmer used to breed corn that grows quickly and is a perfect shade of yellow

Answer 10

Hybridization

Question 11

What technique of selective breeding chooses parents with similar sets of alleles

Answer 11

Inbreeding

Question 12

Many human characteristics are result of the interaction between genes and what

Answer 12

The environment

Question 13

If a doctor wanted to see all the chromosomes in a body cell of a patient, what would he use

Answer 13

Karyotypes

Question 14

Are there any examples of humans who would share the same DNA? If so who

Answer 14

Identical twins

Question 15

What are the sex chromosomes of a Male? A female?

Answer 15

A male has a Y chromosome and an x chromosome. If female has 2 X chromosomes

Question 16

What is a carrier

Answer 16

A person who has one recessive allele for a trait and one dominant allele. And they don’t show the trait

Question 17

What type of genetic engineering inserts a gene from one healthy organism into the DNA of another with a genetic disorder

Answer 17

Gene therapy

Question 18

In a pedigree, what shape are males and what shape are females

Answer 18

A male is a square a female is a circle

Question 19

How are carriers shown in a pedigree

Answer 19

They are half shaded in

Question 20

How are individuals with the trait shown in a pedigree

Answer 20

They are completely shaded in

Question 21

Effects lungs and pancreas

Answer 21

Cystic fibrosis

Question 22

Cause is a recessive allele

Answer 22

Cystic fibrosis

Question 23

Blood doesn’t clot appropriately

Answer 23

Hemophilia

Question 24

The genes are located on the X chromosome making it recessive. Sex linked

Answer 24

Hemophilia

Question 25

Effects red blood cells. Sickle shape

Answer 25

Sickle cell disease

Question 26

Codominant

Answer 26

Sickle cell disease

Question 27

Proteins that are produced wrong. Effects Mental capability. The way they look

Answer 27

Down syndrome

Question 28

An extra copy of chromosome 21

Answer 28

Down syndrome