NEW
Font size
WorksheetsSpring 2023 Unit 4 Heredity
Total questions: 26
Worksheet time: 13mins
Assume a white cabbage butterfly mates with a yellow cabbage butterfly, and all of the offspring (F1) are heterozygous and white.
Which cross represents the genotypes of the parent generation?
Aa x aa
AA x Aa
AA x aa
Aa x Aa
Which cross could produce a child with type O blood?
IAi x IBIB
IAIA x IBi
IAIB x ii
IAi x IBi
Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic results?
100% purple.
75% purple,
25% white.
50% purple,
50% white.
25% purple,
75% white.
In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r). A rough coat male and a soft coat female mate. They produce several litters, 50% are rough coat and 50% are smooth coat. What must be the genotypes of the parents to create this phenotypic ratio?
Homozygous dominant and homozygous recessive
Heterozygous and homozygous recessive
Homozygous dominant and heterozygous
Both heterozygous
The Punnett square in Figure depicts a type of cross known as a monohybrid cross, and it is similar to crosses performed by Gregor Mendel. Which of the following arguments can NOT be defended using the evidence in this Punnett square?
The purple phenotype is dominant and the white phenotype is recessive.
Having purple flowers gives plants an advantage over plants with white flowers, making the purple ones more likely to survive and produce more offspring.
If one heterozygote was fertilized by another heterozygote, it is likely that 75% of the next generation of plants would have purple flowers.
Homozygous recessive plants have white flowers.
Students studied Mendel's laws of segregation and independent assortment. They created a Punnett square to show a cross between a homozygous furred mouse (FF) and a homozygous furless mouse (ff). The students then created a Punnett square for a cross between two heterozygous F1 mice. Which of the following questions could be answered using the information from the Punnett squares in Figure 10?
How many mice will be produced in the F1 generation?
Will fewer furless mice survive to adulthood than furred mice?
Can furred mice produce furless mice?
Are furred mice the best organism to use for this investigation?
Which of the following represents the genotypes of the parents in this dihybrid cross?
GGYY x GGYY
GgYy x GgYy
GgYY x GgYY
ggYy x ggYy
What will be the phenotypic ratio of offspring in this dihybrid cross?
3:1
1:2:1
1:1:1:1
9:3:3:1
The pedigree in Figure follows a recessively inherited trait. Use the pedigree below to answer questions. What is the genotype of individual IV,1?
AA
Aa
aa
Not enough information
What is the sex of individual IV,1?
Female
Male
Both
Noth enough information
If individuals II,1 and II,2 had more children, what is the probability that they would express this recessive trait?
0
25
50
100
Holstein cattle are a breed of dairy cow that originated in the Netherlands & Germany and are today the world’s highest-producing dairy animals. In their genome is a gene that contributes to their coat color. One allele codes for a white coat; the other allele codes for a black coat. Heterozygotes express both of these colors simultaneously, resulting in animals that have black and white “spots.” If a spotted parent mates with a black parent, what is the percent chance of a spotted baby calf?
0
25
50
100
A labradoodle is mix between a Labrador Retriever and a Standard Poodle. Labradoodles have wavy coats (CS) while Labrador retrievers have straight coats (SS) and standard poodles have curly coats (CC). Figure 13 depicts the types of coats.
What inheritance pattern best describes the inheritance of coat pattern in these dogs?
Traditional Dominant
Incomplete Dominant
Codominant
Sex-linked recessive
A labradoodle is mix between a Labrador Retriever and a Standard Poodle. Labradoodles have wavy coats (CS) while Labrador retrievers have straight coats (SS) and standard poodles have curly coats (CC).
If a labradoodle has offspring with another labradoodle, what is the probability that their offspring will have curly coats?
0
25
50
100
Which process can produce a large group of organisms with identical genotypes?
Cloning
Meiosis
Sexual Reproduction
External
Fertilization
Sexual reproduction requires much more energy use from parents. Which of the following best explains why sexual reproduction is valuable for life despite its large energy investment?
Sexual reproduction ensures there are no mutations in offspring whereas asexual reproduction creates too many mutations.
Asexual reproduction does not require two parents, so it is easier than sexual reproduction.
Sexual reproduction produces genetically non-identical offspring, whereas asexual reproduction produces genetically identical offspring.
Asexual reproduction makes more offspring which are harder to care for, whereas sexual reproduction makes fewer offspring.
The image in Figure is a model of a cell undergoing meiosis. Assume that this cell belongs to a species with a diploid number of 6.
Which of the following statements could be cited as evidence that the cell is in Metaphase I?
The chromosomes are duplicated, with each chromosome consisting of two sister chromatids.
The chromosomes are aligned across the center of the cell and are identical.
The cell contains the diploid number of chromosomes and the chromosomes are in homologous pairs.
The spindle fibers have attached to the chromosomes and will separate soon.
Which of the diagrams in Figure 1 represents mitosis?
Diagram A
Diagram B
Diagram C
Diagram D
Which os the diagrams in this figure represents meiosis?
Diagram A
Diagram B
Diagram C
Diagram D
In the diagram shown which type of change most likely caused the new combination of traits in gametes B and C?
An alteration in the chemical composition of the gene.
A change in the chromosome composition due to crossing over.
A change in the chromosome number due to nondisjunction.
An alteration in the number of sugars in DNA
Which of the mutated chromosomes above could have resulted from a deletion in the original chromosome?
Mutated chromosome 1
Mutated chromosome 2
Mutated chromosome 3
Mutated chromosome 4
The mutated chromosomes above could have resulted from a duplication in the original chromosome?
Mutated chromosome 1
Mutated chromosome 2
Mutated chromosome 3
Mutated chromosome 4
Use the karyotype to figure out the sex of the person.
Male
Female
Not enough information
There is a mutation on chromosome 21. What is the most likely causeo of this mutation?
There was an error during DNA replication before meiosis.
The chromosomes failed to separate during meiosis.
The chromosome separated improperly during mitosis.
The chromosomes exchanged information with other chromosomes during meiosis.
Which of the following types of reproduction is correctly paired with mitosis and meiosis?
Mitosis - Asexual; Meiosis - Sexual
Mitosis - Sexual; Meiosis - Asexual
Mitosis - Sexual; Meiosis - Sexual
Mitosis - Asexual; Meiosis - Asexual
Down syndrome is a genetic disorder caused by the presence of an extra chromosome number 21 in the body cells of humans. The extra chromosome is most likely the result of
Mitotic cell division in the brain
Sex-linkage of the trait
Development of an unfertilized egg
Nondisjunction during meiosis.
