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WorksheetsGenetics Practice Test
Total questions: 21
Worksheet time: 11mins
Define Alleles
Molecule which contains the genetic information for an organism.
Different versions of the same gene.
all the chromosomes/DNA that code for an individual’s traits.
Condensed DNA that is visible during cell division.
Define Gene
Condensed DNA that is visible during cell division.
Different versions of the same gene.
A section of DNA that codes for specific proteins/traits.
Molecule which contains the genetic information for an organism.
Define Genome
Molecule which contains the genetic information for an organism.
Different versions of the same gene.
Condensed DNA that is visible during cell division.
all the chromosomes/DNA that code for an individual’s traits.
Define Chromosome
Condensed DNA that is visible during cell division.
Different versions of the same gene.
all the chromosomes/DNA that code for an individual’s traits.
1. A section of DNA that codes for specific proteins/traits.
During what process does independent assortment and segregation of alleles occur?
Mitosis
Meiosis
Fertilization
A genotype describes the physical characteristics of an individual.
True
False
A phenotype describes the genetic make-up of an individual.
True
False
When Mendel crossed true-breeding tall plants (TT) with true-breeding short plants (tt), all of the offspring were tall because...
The allele for tall plants is recessive.
The allele for short plants is dominant.
The allele for tall plants is dominant
What is the relationship between phenotype and genotype?
The phenotype determines the genotype.
The genotype determines the phenotype.
There is no relationship between phenotype and genotype.
What principle states that during gamete formation genes for different traits separate without influencing each other’s inheritance?
Principle of independent assortment.
Principle of recessives alleles
Principle of complete dominance.
Principle of incomplete dominance.
The law of segregation states: Allele pairs separate during gamete formation and randomly unite at fertilization.
True
False
What's missing in this sequence?
DNA -> Genes -> ______ -> Genome
homozygous
chromosome
allele
RNA
Tt is an example of...
Homozygous Dominant
Heterozygous
Homozygous Recessive
Principle/Law of Segregation is defined as...
Some alleles are dominant over others.
Allele pairs separate during gamete formation and randomly unite at fertilization.
During gamete formation genes for different traits separate without influencing each other’s inheritance
Principle/Law of Independent is defined as...
Some alleles are dominant over others.
Allele pairs separate during gamete formation and randomly unite at fertilization.
During gamete formation genes for different traits separate without influencing each other’s inheritance
Principle/Law of Dominance is defined as...
Some alleles are dominant over others.
Allele pairs separate during gamete formation and randomly unite at fertilization.
During gamete formation genes for different traits separate without influencing each other’s inheritance
A Punnett square shows all of the following EXCEPT
All possible results of a genetic cross.
The possible genotypes of the offspring.
The alleles in the gametes of each parent.
The actual genotypes of the offspring.
Multiple alleles refer to an inheritance pattern that has more than two alleles that control phenotype.
True
False
Which option below best describes polygenic inheritance?
More than one set of genes contributing to the phenotype
A blending of genes getting an intermediate phenotype
A phenotype that has more than 2 possible alleles for a gene
A white rose and a red rose produce a pink rose, which type of inheritance does this show?
incomplete dominance
codominance
Multiple alleles
Polygenic inheritance
A kitten has spots and stripes. The mother has stripes and the father has spots. Which law of inheritance does this show?
incomplete dominance
codominance
multiple alleles
polygenic inheritance
