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AP Biology: Unit 5 Review

Total questions: 37

Worksheet time: 45mins

Name
Class
Date
1.

CROSSING OVER INCREASES

a)

LIFE SPAN

b)

GENETIC VARIATION

c)

THE NUMBER OF OFF-SPRING

d)

ALL ARE TRUE

2.

CROSSING OVER TAKES PLACE DURING

a)

PROPHASE II

b)

PROPHASE I

c)

INTERPHASE

d)

METAPHASE I

3.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
4.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
5.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
6.
Which letter(s) in the diagram correspond to cells that are haploid? 
a)
A
b)
B
c)
C
d)
A and B
7.
Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?
a)
The same number
b)
One-fourth as many
c)
Twice as many
d)
Half as many
8.

If a stem cell (body cell) has 24 chromosomes, how many will it have at the end of meiosis?

a)

24

b)

12

c)

6

d)

the number varies per species

9.
When homologous chromosomes match up, they form a structure call a ___________.
a)
tetrad
b)
triad
c)
diploid
d)
gamete
10.
Human eggs and sperm are _____, and each has ____ chromosomes.
a)
diploid, 23
b)
diploid, 46
c)
haploid, 23
d)
haploid, 46
11.
Chiasmata are what we see under a microscope that let us know which of the following is occurring?
a)
Crossing over
b)
Anaphase II
c)
Meiosis II
d)
e. Separation of homologs
12.

Which of the following best describes the inheritance pattern of the shown pedigree?

a)

Autosomal Dominant

b)

Sex-Linked Dominant

c)

Autosomal Recessive

d)

Sex-Linked Recessive

13.

Describe the cause of a cross resulting in greater than 50% parental phenotypes and less then 50% recombinant phenotypes

a)

Genes are linked on the same chromosome

b)

Genes are located on different arms of the same chromosome

c)

Gene are on different chromosomes

d)

Gene are found in different gametes

14.

When does the process of independent assortment take place?

a)

prophase I

b)

metaphase I

c)

anaphase I

d)

telophase I

15.

What phase of meiosis describes the law of segregation?

a)

telophase I

b)

anaphase I

c)

telophase II

d)

anaphase II

16.

If blue and red true-breeding flowers are mated and result is all purple offspring, what inheritance pattern would this be indicative of?

a)

Codominance

b)

Dominance

c)

Incomplete dominance

d)

Multiple Alleles

17.

Can a human male be a carrier of red-green color blindness?

a)

Yes, males can be carriers of red-green color blindness, as color blindness is autosomal dominant

b)

No, males cannot be the carriers of red-green color blindness, as color blindness is X-linked

c)

No, males cannot be the carriers of red-green color blindness, as color blindness is Y-linked

d)

Yes, males can be carriers of red-green color blindness, as color blindness is autosomal recessive

18.

Susy has blonde hair (hh). Her mother has blonde hair, and her father has brown hair (dominant trait). What are the genotypes of Molly's parents?

a)

Mom: hh; Dad: HH

b)

Mom: hh, Dad: Hh

c)

Mom: hh, Dad; hh

d)

Mom: HH, Dad: HH

19.

In Snowmen, three buttons (B) is dominant to two buttons (b), and a carrot nose (N) is dominant to a coal nose (n). What would be the genotype of a snowman that was homozygous recessive for button number and heterozygous for nose type?

a)

BBNn

b)

bbNN

c)

bbNn

d)

BbNn

20.
Each identical side of a chromosome is the 
a)
centromere
b)
chromatin
c)
centriole
d)
chromatid
21.
Autosomes are
a)
chromosomes found in autotrophs, only
b)
chromosomes that automatically correct all errors in the DNA
c)
chromosomes that determine traits other than sex
d)
chromosomes that determine the sex of the individual
22.
The structure that holds two chromosomes together until they separate for cell division is the
a)
chromatid
b)
chromatin
c)
centromere
d)
cytoplasm
23.

SELECT ALL THAT APPLY: Sex Chromosomes:

a)

Pair #23

b)

Determine whether you're male / female

c)

Pairs #1-22

d)

Every chromosome except sex chromosomes

24.

SELECT ALL THAT APPLY:

a)

Male

b)

Female

c)

No chromosomal abnormalities

d)

Trisomy 21

25.

SELECT ALL THAT APPLY:

a)

Male

b)

Female

c)

No chromosomal abnormalities

d)

Trisomy 21

26.

SELECT ALL THAT APPLY:

a)

Male

b)

Female

c)

No chromosomal abnormalities

d)

Trisomy 18

27.

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?

a)

male with white eyes

b)

female with red eyes

c)

male with red eyes

d)

female with white eyes

28.

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R Y ?

a)

male with white eyes

b)

female with white eyes

c)

male with red eyes

d)

female with red eyes

29.

H= normal blood clotting

h=hemophilia


XHXh x XHY


What is the probability that any of their offspring will have hemophilia?

a)

4/4

b)

3/4

c)

2/4

d)

1/4

30.
Males are more likely to suffer from a sex-linked disease or disorder because
a)
males are the weaker sex
b)
males have less DNA
c)
males have 1 X chromosome, so the disorder is more likely to be expressed
31.

Males can be heterozygous for sex-linked traits.

a)

True

b)

False

32.

Jacob has type B blood and his mother is type O. Which of the following is true?

a)

His father can be type AB

b)

His father must be type B

c)

His father passed down the recessive allele

d)

His father is type O.

33.

How many different allele combinations can be passed down by an individual who is heterozygous for both brown eyes, B and brown hair, H?

a)

1

b)

2

c)

3

d)

4

34.
Cross Two Homozygous plants
(
RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 
a)
0%
b)
25%
c)
50%
d)
100%
35.
What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
a)
Ry
b)
RRyy
c)
RrYy
d)
Rryy
36.
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?
a)
3/16
b)
4/16
c)
8/16
d)
12/16
37.

Sonia has 5 yellow hair clips, 2 red hair clips, and 3 blue hair clips in her purse. What is the probability that she will randomly select one yellow hair clip and one blue hair clip without replacement?

a)

320\frac{3}{20}

b)

16\frac{1}{6}

c)

1556\frac{15}{56}

d)

815\frac{8}{15}