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WorksheetsAP Biology Unit 5- Heredity
Total questions: 56
Worksheet time: 51mins
What is the genotypic ratio of the offspring?
3 AA : 1 aa
1 AA : 3 aa
1 AA : 2 Aa : 1 aa
2 AA : 2 aa
In a cross between a pure bred white flower and pure bred red flower, what is the probability of a pink offspring? (assume incomplete dominance)
0%
25%
50%
75%
100%
What is genetic recombination?
The combination of genes produced by crossing over and independent assortment.
When genes located close to each other on the same chromosome tend to travel together during meiosis.
A map that shows the sequence of genes on a chromosome.
The occurrence of one or more extra sets of chromosomes.
What is gene linkage?
The combination of genes produced by crossing over and independent assortment.
When genes located close to each other on the same chromosome tend to travel together during meiosis.
A map that shows the sequence of genes on a chromosome.
The occurrence of one or more extra sets of chromosomes.
There is 30% recombination frequency between two genes. The relative distance between them in map units is:
15
30
60
80
In a genetic test cross, 1000 offspring were produced. A total of 750 were parental types. What is the frequency of recombination?
75%
25%
100%
Can't be determined
Which genotype represents a female who is a carrier for hemophilia?
Orange or black fur is a single, X-linked, co-dominant trait in cats. Calico cats have white fur with patches of orange and black. Is it true that calico cats can only be female?
Yes, because they have 2 'X' chromosomes, and therefore can have both the orange and black alleles (XO XB)
No, males can be calico because they can have both the alleles for orange and black (XO YB)
Yes because the trait is found on the X chromosome (XOB X)
No, males can be calico because the trait is found on the X chromosome (XOB Y)
What are the degrees of freedom for the data if it was used in a χ² test?
1
3
5
7
What is the Chi Square critical value for 4 degrees of freedom and p = 0.05?
7.82
9.49
13.28
5.99
A scientist crosses two tall plants and gets the following offspring: 693 tall and 307 short. If the calculated Chi Square is 17.3, is the null hypothesis accepted or rejected?
Rejected, the calculated Chi2 exceeds the CV
Accepted, the calculated Chi2 is less than the CV
Accepted, the calculated Chi2 exceeds the CV
Rejected, the calculated Chi2 is less than the CV
The pedigree chart below shows the blood types of three members of a family. What could be the blood types of individuals 1 and 2?
1= A 2= AB
1=AB 2=A
1=O 2=AB
1=B 2=A
What evidence is given in the pedigree chart below to establish that the condition is caused by an autosomal dominant allele?
The disorder is found only males
Two affected parents always have unaffected children
The disorder skips a generation
Give the genotype for person II-1, for this autosomal recessive trait.
Homozygous Dominant
Heterozygous
Homozygous Recessive
we cannot be 100% sure of the genotype
If hemophilia is a sex-linked recessive trait, what genotype would individual III-3 have?
XhX
XhXh
XhYh
XhY
The karyotype diagram below represents a human female with the genetic disorder known as Turner syndrome. Chromosomal analysis of this karyotype reveals the mutation is a result of
a missing X chromosome
a missing Y chromosome
an extra 21 chromosome
missing chromosome #9
In an incomplete dominance cross between a white flower and a red flower, what is the probability of a pink offspring?
0%
25%
50%
75%
100%
In a cross between an individual with type A blood and an individual with type B blood, what is the probability of an offspring with type O blood?
0/4
1/4
1/2
3/4
4/4
This process involves homologous chromatids exchanging genetic material to increase genetic diversity.
crossing over
random fertilization
independent assortment
gene flow
Which of the following best describes the inheritance pattern of the shown pedigree?
Autosomal Dominant
Sex-Linked Dominant
Autosomal Recessive
Sex-Linked Recessive
Describe the process of nondisjunction.
Homologous chromosomes exchange genetic information
The alignment of the chromosomes on the metaphase plate
Homologous chromosomes or sister chromatids remain attached during anaphase
The process of sperm and egg fusing to create a zygote
Which of the following is a predicted ratio of a dihybrid cross?
9:3:3:1
9:3:4
1:2:1
1:1:1:1
Describe why a male is more likely to be affected by a sex-linked trait?
Males have only 1 Y chromosome
Females have only 1 Y chromosome
Males have only 1 X chromosome
Females have only 1 X chromosomes
The diagram above illustrates which of the following processes?
Crossing-over
Base pair subsitution
Duplication
Deletion
What is an example of a codominant trait in the human body?
Hair color
Skin Color
Blood Type
Color Blindess
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?
Mom: hh; Dad: HH
Mom: hh, Dad: Hh
Mom: hh, Dad; hh
Mom: HH, Dad: HH
Two chromosomes in the nucleus that carry genes for the same traits are known as
complementary chromosomes
heterologous chromosomes
homologous chromosomes
BFF4L
According to Mendel's Law of Segregation,
there is a 50% probability that a gamete will get a dominant allele
allele pairs segregate of independent other pairs of alleles in gamete form
allele pairs separate in gamete formation.
there is a 3:1 ratio in the f2 generation
What is the difference between the multiplication rule and the addition rule?
Multiply = independent Addition = mutually exclusive
Multiply = mutually exclusive Addition = independent
Multiply = dependent Addition = mutually exlusive
Multiply = mutually exclusive Addition = dependent
What is incomplete dominance?
One allele is expressed over the other in a heterozygote
When both alleles are expressed in a heterozygote
A blend of the parental traits; neither is dominant
When your parents can't agree on what's for dinner
What is codominance?
Both alleles are partially expressed
Both alleles are recessive
Both alleles are equally strong and visible
Neither allele is expressed
Epistasis is when
1 gene alters phenotypic expression of another gene
When a trait is inherited by incomplete and codominance
There is codominance and 2 alleles affect the phenotype
An astronaut is put into a medically induced sleep
In a dihybrid cross where both parents are heterozygous at both loci, expected phenotypic ratio
the ratio is 4:3:1
the ratio is 1:1
the ratio is 9:3:3:1
the ratio is 1:2
What is a gene loci
Heterozygous carrier of a recessive disease
Having two copies of the same dominant allele
Specific positions of genes on a chromosome
Having two copies of the same recessive allele
Which of the following form(s) a Barr body
one of the Y chromosomes in a male cell
one of the X chromosomes in a male cell
one of the X chromosomes in a female cell
both of the X chromosomes in a female cell
Linked genes are on the same ......
gamete.
karyotype.
chromosome.
clothesline.
A linkage map shows the relative location of ________ on chromosomes
genes
mutations
mistakes
pathogens
Name this phase of Meiosis
Anaphase II
Anaphase I
Metaphase I
Metaphase II
The phase in Meiosis where crossing over occurs:
Metaphase I
Prophase I
Prophase II
Profés
Name this phase of Meiosis:
Telophase I
Prophase II
Telophase II
Anaphase II
The phase of Meiosis in which chromatids separate:
Prophase II
Metaphase II
Telophase II
Anaphase II
In humans, the haploid number of chromosomes is ____.
23
46
69
92
Which of these is an example of polygenic inheritance?
Freckles
Sickle Cell Anemia
Duchenne muscular dystrophy
Skin Color
Color Blindness
In a chi squared test, the greater the difference between the observed and expected frequencies of a trait, the ___ the p-value.
More negative
More Positive
Greater
Lower
"True-breeding" individuals have a ____ gentoype.
Homozygous
Heterozygous
Which term(s) best describes the inheritance of human blood types?
incomplete dominance and multiple alleles
codominance and epistasis
codominance and multiple alleles
incomplete dominance and codominance
What is unique to Prophase I- is that the duplicated chromosomes pair up to form _______.
a centrosome
a tetrad
the mitotic spindle
sister chromatids
The --------------------- cells undergo Mitosis while the --------- undergo Meiosis
(A) Somatic or body ; Gametes
(B) Gametes; Somatic or body cells
(C) Gametes; Gametes
(D) Somatic or Body cells; Somatic or Body cells
Meiosis results in ------------ While Mitosis resuls in ---------
(A) 2 haploid daughter cells and 2 haploid daughter cells
(B) 4 haploid daughter cells and 2 diploid daughter cells
(C) 2 diploid daughter cells and 4 haploid daughter cells
(D) 4 diploid daugther cells and 2 haloid daughter cells
The picture depicts what stage of meiosis?
(A) Prophase 1
(B) Anaphase 1
(C) Metaphase 2
(D) Metaphase 1
(E) Telophase 1
Compare and contrast number of DNA replications between mitosis & meiosis
Mitosis – 0, Meiosis – 1
Mitosis – 1, Meiosis – 1
Mitosis – 1, Meiosis – 2
Mitosis – 1, Meiosis – 0
PKU is an autosomal recessive disorder. A man is a carrier of PKU and his wife is heterozygous.
What is the probability they have a child who suffers from PKU?
0%
25%
50%
75%
100%
What is the study of genes and inheritance known as?
Genetics
Chemistry
Physics
Astronomy
