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Unit 6: Inheritence & Artificial selection

Total questions: 62

Worksheet time: 59mins

Name
Class
Date
1.
Where does an off spring get its traits in asexual reproduction?
a)
From both parents
b)
From only one parent
c)
From neither parent
d)
There are no traits handed down
2.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2 
3.

All of the offspring of an organism have the same genetic material, which is identical to the parent organism. From this, we can conclude that this organism -

a)

makes its own food

b)

is unicellular

c)

live in a marine habitat

d)

reproduces asexually

4.

Penguins lay 1-2 fertilized eggs that the male and female take turns incubating on their feet. What type of reproduction does this example represent?

a)

Sexual reproduction

b)

Asexual reproduction

5.

Reproducing asexually will produce offspring ...

a)

genetically different from each other

b)

genetically identical to the parent

6.
2 dogs reproduce, 2 sex cells join together & form offspring. The resulting offspring is likely
a)
to express only recessive traits
b)
to be identical to ONE parent
c)
to share some traits from BOTH of its parents
7.
Which of the following describes the main advantages of sexual reproduction? 
a)
requires lots of time/energy
b)
no new gene combos can arise 
c)
diversity
d)
looks identical to the parent
8.
 A general name for a sex cell (egg or sperm) is a: 
a)
zygote
b)
gene
c)
offspring
d)
gamete
9.
Which reproduction requires a mate?
a)
asexual
b)
sexual
c)
neither
10.
What percentage of chromosomes are handed down by a sperm cell?
a)
75%
b)
25%
c)
50%
d)
100%
11.

What is a major disadvantage of asexual reproduction?

a)

No mutations

b)

Less genetic diversity

c)

Takes longer

d)

Requiered to find a mate

12.

What is a disadvantage of sexual reproduction?

a)

Mutations

b)

More genetic diversity

c)

Takes more time and energy

d)

It's fast and easy

13.

Any change in the sequence of DNA is a

a)

recombination

b)

mutation

c)

chromatin

d)

independent assortment

14.
Crossing over is important because....
a)
It prevents mutations from entering the gametes. 
b)
It allows for even distribution of chromosomes in the gametes.
c)
It allows for more genetic diversity of gametes.
d)
It allows for genetic uniformity of gametes. 
15.
An allele is
a)
another word for a gene
b)
a homozygous genotype
c)
a heterozygous genotype
d)
one of several possible forms of a gene
16.
Phenotype refers to the ______________________ of an individual.
a)
genetic makeup
b)
actual physical appearance
c)
recessive alleles
17.

A _______ is an alternative form a gene.

a)

chromosome

b)

sister chromatid

c)

allele

d)

telomere

18.

a trait that is always expressed if present is _____________________

a)

Recessive

b)

Dominant

c)

Strong

d)

True

19.

a trait that is masked unless 2 copies are present is ________________________

a)

recessive

b)

dominant

c)

weak

d)

hidden

20.

alleles for a trait that are the same

a)

Homozygous

b)

Heterozygous

c)

Quasizygous

d)

Juxtazygous

21.

alleles for a trait that are the different

a)

Homozygous

b)

Heterozygous

c)

Quasizygous

d)

Juxtazygous

22.

the physical/observable characteristic

a)

phenotype

b)

genotype

23.

the organism's genetic makeup

a)

phenotype

b)

genotype

24.

Select all that would be considered phenotypes:

a)

Blonde

b)

Rr

c)

Short

d)

rr

25.

Select all that would be considered genotypes:

a)

Blonde

b)

Rr

c)

Short

d)

rr

26.

Law of segregation states:

a)

the two alleles for each trait separate during meiosis

b)

the two alleles for each trait separate during mitosis

c)

a random distribution of alleles occur during gamete formation

d)

a ordered distribution of alleles occur during gamete formation

27.

Law of independent assortment states:

a)

the two alleles for each trait separate during meiosis

b)

the two alleles for each trait separate during mitosis

c)

a random distribution of alleles occur during gamete formation

d)

a ordered distribution of alleles occur during gamete formation

28.

What genotype is homozygous dominant?

a)

RR

b)

Rr

c)

rr

29.

What genotype is homozygous recessive?

a)

RR

b)

Rr

c)

rr

30.

What genotype is heterozygous?

a)

RR

b)

Rr

c)

rr

31.
T3 - What does heterozygous mean?
a)
An organism that has the same alleles for a trait (TT or tt)
b)
An organism that has different alleles for a trait (Tt)
c)
When neither allele is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
32.

What is it called when chromosomes are randomly sorted into unique gametes?

a)

Mendels Law

b)

Mitosis

c)

Independent Assortment

d)

Chromosomal shuffling

33.

Independent assortment is important because it helps create ___________.

a)

Mutations

b)

Genetic diversity

c)

Gametes

d)

Offspring

34.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
35.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
36.
Snap dragon color is a incomplete dominant trait.  A red flower (RR) is crossed with white flower (rr)? What color are flowers that are Rr?
a)
Red
b)
Red and White
c)
White
d)
Pink
37.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
38.
This is an example of ___________.
a)
 Incomplete Dominance
b)
 Codominance
39.

Codominance occurs in calico cats, which allows for the Black and Tan colors to show. What percentage of the offspring represented in this P square will be calico (black and tan spotted)?

a)

25%

b)

50%

c)

75%

d)

100%

40.

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be black?

a)

25

b)

50

c)

75

d)

100

41.

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be white?

a)

25

b)

50

c)

0

d)

100

42.
Which statement best supports why many offspring look similar to their parents?
a)
Offspring inherit characteristics from one parent.
b)
Offspring inherit characteristics from both parents.
c)
Parents choose which characteristics to pass on to their offspring.
d)
Parents choose to change their appearance to match that of their offspring.
43.
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
a)
0%
b)
25%
c)
50%
d)
75%
44.
Leonardo bet his friend Olivet that two heterozygous green-eyed sea monsters could not have a recessive blue-eyed baby sea monster. Olivet said they can have a blue-eyed sea monster.
Who wins the bet?
a)
Leonardo
b)
Olivet
c)
Both
d)
Neither
45.
Identify the homozygous dominant genotype:
a)
FF
b)
Ff
c)
ff
46.
What phenotype would result from crossing a homozygous dominant purple-flowered pea plant with a homozygous recessive white-flowered pea plant?
a)
Pp
b)
Purple
c)
White
d)
PP and pp
47.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
48.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
49.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
50.

What is an example of artificial selection?

a)

Letting dogs choose their own mate

b)

Letting plants pollinate on their own

c)

Crossing a labrador and a poodle to create a labradoodle

51.

1. Artificial selection has been a big factor in the evolution of:

a)

Dogs

b)

Panda bears

c)

Snakes

d)

Jellyfish

52.

1. The process of choosing parent organisms for desired characteristics is called

a)

natural selection

b)

Artificial selection

c)

random selection

d)

genetic manipulation

53.

Artificial selection is also known as

a)

natural selection

b)

selective hearing

c)

genetic manipulation

d)

selective breeding

54.

When humans select desirable traits to be passed down to offspring

a)

natural selection

b)

artificial selection

55.

All artificial selection or "selective breeding" is good

a)

True

b)

False

56.

What is this an example of?

a)

natural selection

b)

artificial selection

57.

Artificial Selection is

a)

a new concept

b)

discovered by Darwin and used ever since

c)

used for thousands of years

d)

a 19th century concept

58.

Artificial Selection decreases diversity which is bad because

a)

organisms with same traits will refuse to reproduce with each other

b)

organisms with all the same traits are susceptible to extinction.

c)

organisms with the same traits will be very aggressive

d)

organisms with same traits collectively get smarter and will some day rule the world

59.

Genetic engineering can be used to:

a)

Stop farmers replanting their GMO seeds.

b)

Produce mutant rats to power the electric grid with large hamster wheels.

c)

Add genes usually not found in a species.

d)

Grow additional limbs to give athletes a winning edge.

60.
GMO stands for 
a)
Genetically modified organism
b)
Genetically made organism
c)
Generically made organ
d)
Generically modified organism
61.
The purpose of selective breeding is to 
a)
Get bigger animals
b)
get smaller animals
c)
create animals with desirable traits
d)
create animals with bad traits
62.
What is genetic engineering?
a)
Manipulation/addition of genes
b)
Naturally breeding two animals with desired traits
c)
Cross-pollinating two crops
d)
Harvesting stem cells

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