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WorksheetsNon-Mendelian Genetics
Total questions: 23
Worksheet time: 2hrs 20mins
When more than two versions of a gene for a particular trait exist in the human population, it is a ____________________ trait.
sex-linked
polygenic
epistatic
multiple allele
A gene that is found on the X or Y chromosome is called a(n)
codominant gene
autosomal gene
somatic gene
sex-linked gene
Why do humans have a range of phenotype possibilities when it comes to eye color?
eye color is controlled by the combined effects of many different pigment genes
the gene for eye color is very long in its DNA sequence and it codes for multiple pigment proteins
eye color is controlled by sex-linked genes and therefore eye pigments differ between males and females
eye color is controlled by a recessive allele and pigment is either present or not present
When two alleles are expressed equally in a heterozygous individual and their phenotype is a blend or mix of the homozygous phenotypes
polygenic
incomplete dominance
codominance
pleiotropy
A roan cow shows codominance in fur color (brown and white). What is the phenotype ratio expected in offspring a female roan and a male roan mate together?
All four would be brown and White
Half would be orange, half would be white
2 Brown: 2 Brown and White: 0 White
1 Brown: 2 Brown and White: 1 White
A calico cat expresses the orange allele and black allele equally, having areas of fur with either orange or black pigment. What kind of inheritance pattern is this?
Incomplete Dominance
Codominance
Polygenic
Multiple alleles
What inheritance pattern is demonstrated in this image?
Codominance
Incomplete Dominance
Simple Dominance
Epistasis
True or False: Males always inherit their X chromosome from their mother
True
False
If a woman is a carrier for an X-linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true?
All sons will have hemophilia but daughters would not have hemophilia
all daughters will have hemophilia
50% of daughters and 50% of sons could have hemophilia
100% of sons could have hemophilia and 100% of daughters could be carriers
In some carnations, flower color exhibits codominance. When crossed, red (RR) and white (WW) flowers make speckled flowers (RW) that show both colors.
Complete a cross between a speckled flower and a red flower. What would be the phenotypic ratio of thier offspring?
1 red: 1 speckled
4 red: 0 speckled
4 speckled: 0 white
1 speckled: 1 white
A woman is heterozygous for blood type A and a male is homozygous for blood type B- what blood types are possible in their children?
A, B, AB, and O
A, B, and AB
AB and B
Just B
If a female fruit fly heterozygous for red eyes (XRXr) crossed with a white-eyed male (XrY), what percent of their offspring would have white eyes?
0%
25%
50%
75%
What is the percent probability of a single male sperm cell containing an Y chromosome?
25%
50%
100%
0%
Blood types are an example of codominance and
incomplete dominance
sex linked traits
multiple alleles
polygenics
This is when multiple genes code for a single trait
Polygenic
Pleiotropy
Linked genes
Codominant genes
PKU is a gene that winds up controlling multiple phenotypes such as tremors, stunted growth, seizures, and eczema. This is an example of
epistasis
pleiotropy
sex-linked
multiple alleles
If your DF = 2, and you calculated a X2 value of 1.03 then your p value would indicate
no significant difference between observed and expected data AND you would reject your null hypothesis
no significant difference between observed and expected data AND you would accept your null hypothesis
a significant difference between observed and expected data AND you would reject your null hypothesis
a significant difference between observed and expected data AND you would accept your null hypothesis
A p-value of less than 0.05 indicates
A significant difference between observed and expected data
No significant difference between observed and expected data
Which of the following inheritance patterns explains how a particular version of a regulatory gene can activate or deactivate a gene that controls a particular trait?
codominance
pleiotropy
epistasis
incomplete dominance
Chi-square analysis is used to
modify a person's DNA sequence
predict the likelihood of seeing a particular trait in a person's offspring
determine if an experiment was good or bad
determine if results line up with predictions
Some individuals have both round and sickle shaped red blood cells. This is an example of
multiple alleles
incomplete dominance
polygenic trait
codominance
Labrador retriever's fur color is an example of epistasis. In this case the E gene controls the expression of the B gene. It a puppy was born with the genotype eeBB its fur color would be ________ and if it was born with the genotype EEbb it would be __________
yellow, yellow
yellow, black
chocolate, black
yellow, chocolate
Genes located on the same chromosome are called
linked genes
codominant genes
inherited genes
epistatic genes
