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25 questions
A scientist is studying the inheritance and variation of traits in a family tree. What field of study is he working in?
genetics
ecology
evolution
biology
In genetics, what are the different forms of a gene called that can cause variations in inherited characteristics?
chromosomes
mutations
alleles
proteins
In genetics, what is the term for the combination of alleles a plant has for a particular trait, such as flower color?
mutation
chromosome
genotype
phenotype
In a genetics experiment, you observe certain physical characteristics or traits in the offspring. What are these traits that result from the expression of genes called?
phenotypes
chromosomes
alleles
genotypes
John is a farmer who is interested in understanding the inheritance patterns of traits in his crops, as described by Gregor Mendel. Which branch of genetics should he study?
Genetic engineering
Population genetics
Epigenetics
Mendelian genetics
In genetics, what type of traits are expressed when only one copy of the gene is needed in a pea plant?
Recessive traits
Co-dominant traits
Dominant traits
Incomplete traits
In genetics, what type of traits are expressed only when two copies of the gene are present in an organism?
Dominant traits
Polygenic traits
Codominant traits
Recessive traits
In genetics, what is the term for an organism that has two identical alleles for a particular gene, such as having two copies of the gene that codes for blue eyes?
heterozygous
homozygous
polygenic
monogenic
In genetics, what is the term for a person having two different versions of a gene?
homozygous
monohybrid
polygenic
heterozygous
In genetics, what is the term for a plant that has two different alleles for a particular gene, such as having one allele for red flowers and another for white flowers?
polygenic
heterozygous
monohybrid
homozygous
To develop after birth usually as a result of environmental forces. For example...dyed hair
Chromosomes
Acquired Traits
Inherited Traits
Instincts
A gene that always overpowers a recessive gene. Ex: Brown Eyes
Dominant Gene
Inherited Traits
Genetics
Recessive Gene
A characteristic that is passed from parents to offspring such as hair color, eye color, freckles, dimples.
Chromosomes
Genetics
Learned Behaviors
Inherited Traits
A gene that does not show itself unless it is paired with a like gene. Ex: Red hair and blue eyes
Dominant
Heredity
Chromosomes
Recessive
The structure inside cells that contain genes
Chromosomes
Dominant
Recessive
Instinct
Humans have this many pairs of chromosomes.
32
12
23
46
Which of the following is homozygous dominant?
RR
Rr
rR
rr
Which of the following is homozygous recessive?
RR
Rr
rR
rr
When two phenotypic traits are expressed at the same time, this is called what?
Complete dominance
Incomplete dominance
Codominance
Non-dominance
Brown hair is an example of which of the following
Genotype
Phenotype
Neither
Which of the following is an example of a homozygous genotype?
Rr
rr
NN
Nr
Which of the following is the correct definition for a genotype?
The physical expression of a gene. (Characteristics)
A strand of DNA made up of multiple mutations.
The expression of one of your parents traits.
The set of genes in our DNA which is responsible for a particular trait.
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