WorksheetsUnit #6 Genetics
Total questions: 47
Worksheet time: 34mins
An example of incomplete dominance is
a red flower is crossed with a yellow flower to make an orange flower
a red flower is crossed with a white flower to make a red flower with white patches
a blue flower is crossed with a yellow flower to make a yellow flower
a blue flower is crossed with a yellow flower to make a blue flower
In order to show a recessive allele, such as brown (b), what must the genotype be?
bb (homozygous recessive)
Bb (heterozygous)
BB (homozygous dominant)
BB (Homozygous dominant) or Bb (Heterozygous)
For classic Mendelian laws, what genotype results in a dominant phenotype?
BB
Bb
bb
BB & Bb
In one type of animal, the gene for a long tail (T) is dominant over the gene for a short tail (t). Two animals with long tails are crossed, and 25% of their offspring have short tails. Which diagram correctly shows a Punnett square of this cross?
A Shorthorn cow has a red and white mixed coat called roan. There are either red hairs or white hairs in the coat. What is the genotype for codominant roan color?
RR
RW
WW
rw
In a certain species of rabbits, black coat color is dominant over brown coat color. What is the probability of producing a rabbit with brown coat color from two rabbits that are both heterozygous with black coat color?
100%
50%
25%
10%
What would be the phenotype of a cross between a homozygous dominant tall plant and a homozygous recessive short plant?
100% tall
100% short
25% short, 75% tall
50% short, 50% tall
Tall plants are dominant to short plants. What is the outcome if two short plants are crossed?
all tall plants
all short plants
half tall plants, half short plants
1/4 tall plants, 3/4 short plants
Tongue rolling (T) is dominant to non-tongue rolling (t) in humans. What phenotypic ratio is possible for offspring produced between a non-tongue roller (tt) and a heterozygous (Tt) tongue roller?
all tongue rollers
all non-tongue rollers
1 to 1 ratio of tongue rollers to non-tongue rollers
3 to 1 ratio of tongue rollers to non-tongue rollers
What is an allele?
a version of a gene, like eye color and given a letter to represent it
specific characteristic of a person
segment of DNA that codes for a trait
the characteristic that masks the recessive trait
What describes a dominant trait?
lower case letter
upper case letter
masks the recessive
masked by the other trait
Select which represents: homozygous dominant.
GG
Gg
gg
Select which represents: homozygous recessive.
GG
Gg
gg
Select which represents: heterozygous
GG
Gg
gg
Sex-linked traits are directly related to:
nothing specific
gender
mom
dad
Sex-linked traits are found on:
any chromosome
Chromosome #3
the X or Y chromosome
Chromosome #23
Which word describes the passing of traits from parent to offspring?
Punnett Square
Genetics
Inheritance
DNA
For the punnett square, what is the probability that the offspring will be yellow?
0%
25%
50%
75%
100%
Is this karyotype male or female?
Male
Female
Is this karyotype male or female?
Male
Female
Which individual is a male?
I - 2
II - 1
II - 5
III - 2
Which individual has the disease?
I - 2
II - 1
II - 2
III - 2
How many children do individual II-4 and II-5 have together?
None
1
2
3
A characteristic that an organism passes on to its offspring is known as.....
a trait
double helix
recessive
dominant
You get most of your genetic information from your mother. True or False?
False
True
The passing of traits from parent to offspring is.....
genetics
heredity
recessive
dominant
Which law states one gene from each gene pair goes to separate sex cells?
Dominance
Segregation
Independent Assortment
Recessive
Which law states genes given to the cell for hair color are independent from the genes for eye color?
Dominance
Segregation
Independent Assortment
Independent Beyonce
___________________ alleles overpowers recessive alleles.
Dominant
Recessive
Codominant
Incomplete Dominant
A red fish and blue fish reproduce and have 7 purple offspring. This is an example of:
Dominance
Recessive
Codominance
Incomplete Dominance
Dark hair is a dominant trait. If you are heterozygous for the trait, it means...
You have 2 dominant genes for dark hair and therefore you have dark hair
You have only recessive genes and have light hair
You have 2 dominant genes for dark hair but do not have dark hair
You have dark hair but also carry the recessive gene for light hair
By studying this diagram, you can conclude that the affected condition is...
dominant
recessive
codominant
both dominant and recessive
By studying this diagram, you can conclude that the affected condition is...
dominant
recessive
codominant
both dominant and recessive
A blonde man and a brunette woman fall in love, get married and have 3 kids. One of their children has blonde hair. What must be the genotype of the mother for one offspring to be blonde?
HH
HB
Hh
hh
A pink bunny and a green bunny reproduce and have green bunnies with pink polka dots. This is known as...
Incomplete Dominance
Codominance
Dominance
Easter Bunny Syndrome
Gray squirrel fur color (A) is dominant over white squirrel fur color (a). What is the Dominant phenotype : Recessive phenotype ratio for this Punnet square by crossing two heterozygous squirrels?
1:2:1
3:1
1:3
4:0
The genotype for a yellow plant is...
Which genotype represents a male with normal vision?
Because the gene for red-green color blindness is located on the X chromosome, it is NOT possible for a
carrier mother to pass the gene on to her daughter
carrier mother to pass the gene on to her son
color blind father to pass the gene on to his daughter
color blind father to pass the gene on to his son
Skin color and eye color are both examples of ______________ traits.
sex-linked
simple dominance
polygenic
codominant
On this chart, males are represented with _______.
squares
circles
lines
In the second row of circles and squares, what is the relationship between the squares?
They are siblings.
They are married.
They are all parents.
