Chapter 5 Test

Question 1

which combination of chromosomes is a male human?

Answer 1

XY

Question 2

which is an example of the benefits of genetic engineering?

Answer 2

creating human insulin to help people with diabetes

Question 3

what was the purpose of the human genome project

Answer 3

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

Question 4

what is a genome?

Answer 4

all of the DNA in an organism

Question 5

sex linked genes are on what chromosomes?

Answer 5

x and y

Question 6

a carrier is a person who

Answer 6

has one recessive and one dominant allele for a trait

Question 7

why does height have such a wide variety of phenotypes?

Answer 7

height is controlled by at least four genes

Question 8

what’s a pedigree

Answer 8

a chart that tracks family members traits

Question 9

what causes the body to create abnormally thick mucus

Answer 9

cystic fibrosis

Question 10

what is a Karotype

Answer 10

picture of all chromosomes in a persons cell

Question 11

potato is mixed with a potato that tastes good and resisted disease. what is this called?

Answer 11

hybridization

Question 12

hemophilia is caused by

Answer 12

recessive allele on X chromosome

Question 13

Down syndrome occurs when

Answer 13

chromosome fail to separate during meiosis

Question 14

what is abnormally shaped blood cells?

Answer 14

sickle cell

Question 15

an egg that is fertizlized by sperm cell with what kind of chromosome will result in a female

Answer 15

X chromosome

Question 16

who has unnormally low levels of blood oxygen

Answer 16

sickle cell disease is

Question 17

pedigree: circles =

squares =

Answer 17

circles female

square male

Question 18

which individuals have trait that is traced by pedigree

Answer 18

f and j

Question 19

which individuals are carriers of the trait that is traced by the pedigree

Answer 19

a, c, n, o

Question 20

a plant breeder clones a plant with beautiful flowers. define cloning and explain how the cloned offspring will compare to the plant

Answer 20

cloning is creating an exact genetic replica of the organism being replicated the offspring will be exactly the same

Question 21

is it possible for a son to inherit an allele on an X chromosome from his father? why

Answer 21

it’s not possible for a son to inherit an allele on an X chromosome from his father because males only have one X chromosome which always comes from the mother

Question 22

human eyes come in a variety of colors ranging from light blue to brown. explain why eye color is not likely to be controlled by a single gene

Answer 22

traits that show a large number of phenotypes are usually controlled by many genes l. with multiple genes and two or more alleles for each gene there are many different combinations of alleles and phenotypes

Question 23

Which trait is controlled by multiple alleles?

Answer 23

blood type