Download Biology Common Assessment Name

FRONT
Unit 7: Genetics Qualifier
Part I: Matching: place correct letter on the line that best corresponds to the given statement
1. _____ dominant
2. _____ recessive
3. _____ genotype
4. _____ phenotype
5. _____ heterozygous
6. _____ homozygous
7. _____ incomplete dominance
8. _____ co-dominance
9. _____ sex linked traits
10. _____ polygenic traits
a. a situation in which one allele is not completely dominant over
another, a blending of traits
b. a trait controlled by many genes, creates a typical bell curve in a
population
c. a term used to refer to an organism that has two identical alleles
for a particular trait
d. the physical characteristics of an organism, the traits expressed
e. the genetic makeup of an organism, the set of letters that represent
an organism's genes
f. when one allele over powers another allele, this allele is always
expressed if one is present
g. a term used to refer to an organism that has two different alleles
for the same trait
h. a situation in which both alleles of a gene contribute to the
phenotype of the organism; e.g., blood type; patchy or spotted
traits
i. traits whose genes are located on a sex chromosome
j. when one allele hides under another, this allele is only expressed
if there are two copies present
Part II: Multiple Choice: circle the choice which best answers or statement
11. Which statement best describes the relationship between DNA and chromosomes?
a.
b.
c.
d.
DNA is made of chromosomes
Chromosomes are made of DNA
Chromosomes are made of nucleotides, DNA is not.
DNA is made of nucleotides, chromosomes are not.
12. Why do most sexually reproducing organisms have a pair of chromosomes?
a.
b.
c.
d.
one set comes from the father and one set comes from the mother
two sets come from the mother
two sets come from the father
one set is replicated from the other
13. What are sex chromosomes?
a.
b.
c.
d.
a pair of autosomes that determine the organism’s sex
a pair of chromosomes that determine the organism’s sex
a pair of genes that that determine the organism’s sex
22 pairs of chromosomes that determine the organism’s sex
1
Name: _____________________
Period: _____
14. What does a karyotype do for genetic counselors?
a.
b.
c.
d.
It allows them to do crossing over.
It allows them to discover chromosome disorders.
It allows them to genetically engineer the organism.
It allows them to fertilize an egg cell.
15. Which example below shows that environment helps determine an organism’s phenotype?
a.
b.
c.
d.
an individual’s blood type
whether a person has attached ear lobes or not
whether a person has a genetic disorder or not
long exposure to sun will darken a person’s skin color
16. How do you determine an unknown genotype?
a.
b.
c.
d.
test cross
genotype cross
hybrid cross
polygenic cross
17. Which of the following is not a polygenic trait?
a.
b.
c.
d.
skin color
height
intelligence
hitch hiker’s thumb
Part III: Analysis Multiple Choice: circle the choice which best answers or statement
Show all work when necessary (I.e. Punnett Squares)
18. If long hair (L) is dominant to short hair (l), then to determine the genotype of a long hair animal,
you should test cross it with an animal who is
a.
b.
c.
d.

LL
ll
Ll
None of these
Use this information to answer question 19 & 20.
-
A watermelon plant that is homozygous dominant for red fruit (F) is crossed with a watermelon plant that is
homozygous recessive for yellow fruit (f). All red fruit offspring are produced. If these red fruit offspring are
crossed with each other…
19. What is the probability of these offspring producing red fruit?
a. 25%
b. 50%
c. 75%
d. 100%
20. What is the probability of these offspring producing yellow fruit?
a. 25%
b. 50%
c. 75%
d. 100%
2
BACK
Qualifier

Use the following information to answer question 21 & 22
-
Some flowers show incomplete dominance. BB = blue and RR = red
21. Which phenotypic ratio would be expected in the offspring of one purple and one red flower?
a.
b.
c.
d.
2 red : 2 purple : 0 blue
0 red : 4 purple : 0 blue
0 RR : 2 RB : 2 BB
4 red : 0 spotted : 0 blue
22. Which genotypic ratio would be expected in the offspring of one blue and one purple flower?
a.
b.
c.
d.
1 RR : 2 RB : 1 BB
0 RR : 4 RB : 0 BB
2 red : 2 purple : 0 blue
0 RR : 2 RB : 2 BB
23. John is a color blind male. Color blindness is a recessive sex-linked trait. He married a female that is not color blind.
They have two baby girls. One of their daughters is color blind the other is not. What is the best explanation for this?
a.
b.
c.
d.
John’s wife is a carrier for color blindness.
John’s wife is homozygous for color blindness.
John’s wife is homozygous for normal vision.
John is homozygous for color blindness.
24. Susan, a mother with type B blood has a child with type O. She claims that Craig, who has type A blood, is the father.
A A
Further blood tests ordered by the judge reveal that Craig’s genotype is I I . The judge should rule that…
a.
b.
c.
d.
Susan is right and Craig must pay child support.
Craig is right and doesn’t have to pay support.
Susan cannot be the real mother.
It is impossible to make a decision.
25. Some cats exhibit a co-dominant trait. They can have brown spots, black spots, or both black and brown spots.
What type of offspring would result if a brown spotted cat mated with a black and brown spotted cat?
a.
b.
c.
d.
100% black spots
100% black and brown spots
50% black spots and 50% brown spots
50% brown spots and 50% black and brown spots
26. Looking at Karyotype 1, how would you classify the individual?
a.
b.
c.
d.
male, normal
male, Down Syndrome
female, normal
female, Down Syndrome
Karyotype 1
3
Name: _____________________

Period: _____
Use Pedigree 1 to answer questions 27 & 28.
27. Which statement below is correct about
Pedigree 1?
a. The trait is dominant.
b. The trait is recessive.
c. The trait could be dominant and recessive.
d. None of these statements is correct.
28. Which of the following is correct about
Carla’s parents?
a. Ann = aa, Michael = aa
b. Ann = AA, Michael = aa
c. Ann = Aa, Michael = Aa
d. Ann = aa, Michael = Aa

Pedigree 1
Use Pedigree 2 for questions 29 & 30.
-
The trait in this pedigree is a recessive sex linked trait.
29. What is the genotype of person number 2?
a
a
a. X X
a
b. X X
a
c. X Y
d. X Y
30. Which female is a carrier?
a. 1
b. 2
c. 3
d. 4
Pedigree 2
4