Download Genetics Review

Genetics Review
Name:
Date:
Class: 3/4 5 6 7
What are the sides of a DNA molecule made up of?
During which phase does the copying of DNA occur?
What are the middle “rungs” of the DNA ladder made up of?
What are the 4 bases that are found in DNA?
Adenine pairs with
Guanine pairs with
Cytosine pairs with
Thymine pairs with
What is another name for a sex cell?
In meiosis, what happens to the number of chromosomes?
How many sex cells are produced during meiosis?
What is a mutation?
Are all mutations harmful?
How many pairs of chromosomes do humans have?
How is asexual reproduction different than sexual reproduction?
What are the male sex chromosomes?
What are the female sex chromosomes?
Who were the scientists who discovered the shape of DNA?
What is the shape of DNA?
Which of the following traits is controlled by multiple alleles in humans?
a. sickle-cell anemia
c. hemophilia
b. blood type
d. pattern baldness
What would be the blood type of a person who inherited a B allele from one parent and an O allele from
the other parent?
Two newborn babies are accidentally mixed up at birth. Your job is to properly identify the last name of
each child using only the information supplied regarding the blood types for the parents and children.
Mr. Macland is Type A
Mrs. Macland is Type B
Baby #1 Blood Type O
Last Name:
Mr. Holland Type AB
Mrs. Holland Type O
Baby #2 Blood Type A
Last Name:
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Genetics Review
Name:
Date:
Class: 3/4 5 6 7
Why are males more likely than females to have a sex-linked trait that is recessive?
List a sex linked trait that we have talked about?
What do you call the chart that can trace a trait through your family tree?
What causes genetic disorders?
What do we call a “picture” of chromosomes which may be used to identify genetic disorders?
Make a pedigree from the following information:
The Smith family is known to have colorblindness in their family. The Smith family is made up of a father
and a mother. They had 2 sons and a daughter. Each child married. The oldest son had 2 boys. The
daughter had 2 daughters and a son, and the youngest son had no children with his first wife, but had a
son and a daughter with his second wife. If the father of the Smith family was color blind, trace
colorblindness through the family.
What genetic disorder results from abnormally shaped blood cells?
a. hemophilia
c. Down syndrome
b. cystic fibrosis
d. sickle-celled anemia
What procedure helps doctors diagnose a genetic disorder before a baby is born?
a. genetic engineering
c. selective breeding
b. amniocentesis
d. cloning
_________ _______________ helps to solve crimes because no two people, except identical twins, may
have the same DNA.
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Genetics Review
Name:
Date:
Class: 3/4 5 6 7
In dogs, wavy hair [CS] results by the codominant situation of
curly hair [C] and straight hair [S]. What are the possible results
if a curly-haired male dog and a wavy-haired female dog have
puppies?
_____ % curly
In the 4 o’clock flower, purple [P] is incompletely dominant
over white [W]. What would be the results of a cross if both
parents were pale lavender [heterozygous – PW]?
_____% purple
_____% straight
_____% wavy
_____% white
_____% lavender
_____% red
In horses, red [R] is incompletely dominant over white [W].
Roan is the name of the color that results from incomplete
dominance. What are the possible results if a white male mates
with a roan female?
_____ % white
_____ % roan
_____ % white
In the daisy flower, white [W] and yellow [Y] colors are
codominant, and results in a yellow and white striped flower
when both genes are present. What are the possible results
from the cross-pollination of a striped daisy with a white daisy?
_____ %purple
____ % striped
Complete the Punnett square for the following cross.
Mr. Fenton decided he wants to cross a yellow rose and a red
rose. What possible colors will the new flowers have if yellow
and red are not dominant colors over each other?
Red = R
Yellow = Y
Color(s):
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