Genotypes and Phenotypes

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In genetics, what are the different forms of a gene called that can cause variations in inherited characteristics?

• chromosomes

• mutations

• alleles

• proteins

Tags

NGSS.HS-LS3-2

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

Tags

NGSS.HS-LS3-3

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

Tags

NGSS.HS-LS3-2

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