Genetics

1
Genetics

• With your FAVORITE HOST
• Mrs. Einstein

2
Colorblindness is an example of

• A) X Linked Recessive
• B) Codominance
• C) Incomplete Dominance
• D) Multiple Alleles

3
If you crossed two heterozygous individuals,
their offspring would have

• A) 0 Homozygous recessive
• B) 25 Heterozygous
• C) 75 Dominant Phenotype
• D) 50 Recessive Phenotype

4
Genes located on the X or Y chromosomes are
referred to as

• A) Alleles
• B) Recessive
• C) Sex-linked
• D) Autosomal

5
Blood types is an example of

• 1. Codominance 2. incomplete dominance 3.
  polygenetic 4. multiple alleles
• A. 1
• B. 1, 2
• C. 2, 3
• D. 1, 4

6
A Red flower is crossed with a white flower, the
offspring are pink, this is an example of

• A) Co-Dominance
• B) Incomplete Dominance
• C) Sex-linked
• D) Multiple Genes

7
Using this pedigree, individuals with the arrows
are

• A) Heterozygous
• B) Homozygous Dominant
• C) Homozygous Recessive
• D) Genotype unknown

8
A person with type A marries a person with type
O. Which of following could be an offspring?

• A. Type O
• B. Type B
• C. Type AB
• D. Cannot Determine

9
Roan cows are an example of

• A) Co-Dominance
• B) Incomplete Dominance
• C) Sex-linked
• D) Multiple Genes

10
Most human traits are

• A) Dominant
• B) Recessive
• C) Either Dominant or Recessive
• D) Complex and still not fully understood

11
Number 2 is

• A) Homozygous dominant
• B) Heterozygous
• C) Sex-linked
• D) Homozygous Recessive

E E
e E
1 2 3 4
12
Two parents have the genotype Gg for a dominant
genetic disorder. What are the chances their
offspring will have the disorder?

• A) 25
• B) 50
• C) 75
• D) 100

13
An individual who is heterozygous for a ______
disorder is called a carrier.

• A) Allele
• B) Albinism
• C) Recessive
• D) Dominant

14
Seed color and pod size are examples of

• A) Genotypes
• B) Phenotypes
• C) Heterozygous
• D) Heredity

15
The ______ can only result in one _____.

• A) Trait, Allele
• B) Genotype, phenotype
• C) Phenotype, Allele
• D) Phenotype, Genotype

16
Both parents have widows peak. Their children
should have

• A) All Widows peak
• B) No Widows peak
• C) Half widows peak and half no widows peak
• D) Not enough information

17
This diagram demonstrates

• A) Test Cross
• B) Pedigree
• C) Dihybrid Cross
• D) Karyotype

18
II4 is what relation to III3?

• A) Aunt
• B) Father
• C) Uncle
• D) Nephew

19
For two heterozygous individuals the phenotype
ratio is _____ and the genotype ratio is _____.

• A) 31, 121
• B) 121, 22
• C) 11, 31
• D) 31, 22

20
If a family has 4 girls (like mine!), what are
the chances of their next child being a boy?

• A) 0
• B) 25
• C) 50
• D) 100

21
Mendels discoveries came from his

• A) Careful microscopic evaluation of chromosomes
  and genes
• B) Dissections on how fertilization occurs in pea
  plants
• C) Breeding experiments with many generations of
  fruit flies
• D) Analysis of offspring from several crosses of
  pea plants

22
Alternate forms of a gene are called _______.

• A) Traits
• B) Alleles
• C) Chromosomes
• D) Heredity

23
Which of the following has a heterozygous
genotype?

• A) RR
• B) rr
• C) Rr
• D) Rg

24
On average there are more color blind males
because

• A. Women need two alleles to be colorblind
• B. Men require two alleles to be colorblind
• C. Women have two X chromosomes and it is
  inherited on the Y chromosome
• D. Men are more likely due to chance

25
Two roan cows are crossed. What are the
phenotype ratio of the offspring?

• A) 31
• B) 7525
• C) 50 50
• D) 121

26
What is the pattern of inheritance for this
pedigree?

• A) Dominant
• B) Recessive
• C) Sex Linked
• D) Cannot Determine

27
If a girl is colorblind,

• A) Her mother must be colorblind
• B) Her father cannot be colorblind
• C) Her mother cannot be colorblind
• D) Her father is colorblind

28
Straight hair is recessive and curly hair is
dominant. In co-dominance, the heterozygous
condition would be

• A) Curly
• B) Straight
• C) Wavy
• D) Some straight hairs, some wavy hairs

29
In a pedigree, a circle represents a

• A) Child
• B) Parent
• C) Male
• D) Female

30
A person has a widows peak. All of the
following EXCEPT ____ can be the genotype.

• A) WW
• B) Ww
• C) W_
• D) ww

31
If a person has type AB blood and marries a man
with type A. Which of the following could NOT be
a possible genotype of the offspring?

• A. Type A
• B. Type AB
• C. Type O
• D. Type B