Gregor Mendel and Pea Plants

Why did Gregor Mendel choose pea plants for his experiments on inheritance?

• Because they were difficult to breed and had limited variety of traits.

• Because they were easy to breed and had a variety of traits.

• Because they had a long growth cycle which was ideal for observation.

• Because they showed no distinct dominant or recessive traits.

Answer explanation

Gregor Mendel chose pea plants for his experiments because they were easy to breed and had a variety of traits, making them ideal for studying inheritance.

What concept did Gregor Mendel research that was contrary to the belief of his time?

• The concept that offspring would inherit a blending of traits from each parent.

• The concept that offspring would inherit only the dominant traits from each parent.

• The concept that traits were inherited through pea plants only.

• The concept that traits were inherited without any blending from each parent.

Answer explanation

Gregor Mendel's research contradicted the belief of his time by showing that traits were inherited without any blending from each parent.

Tags

NGSS.HS-LS3-1

What are the two possible types of traits that Mendel found in his experiments with pea plants?

• Environmental and Genetic

• Dominant and Submissive

• Dominant and Recessive

• Permanent and Temporary

Answer explanation

Mendel found two types of traits in his pea plant experiments: Dominant and Recessive. Dominant traits are expressed over recessive traits.

What did Mendel find in his experiments regarding different traits?

• Traits could be dominant or recessive

• Traits could be observed or hidden

• Traits could be tall or short

• Traits could be identical or unique

Answer explanation

Mendel found that traits could be dominant or recessive.

Tags

NGSS.HS-LS3-1

What is used to represent dominant alleles according to the document?

• A lowercase letter

• A number

• An uppercase letter

• A symbol

Answer explanation

Dominant alleles are represented by an uppercase letter.

What is used to represent recessive alleles according to the document?

• A lowercase letter

• A number

• An uppercase letter

• A symbol

Answer explanation

Recessive alleles are represented by a lowercase letter according to the document.

What does the genotype "Hh" represent in the context of the document?

• Two dominant alleles

• Two recessive alleles

• One dominant and one recessive allele

• Neither dominant nor recessive alleles

Answer explanation

The genotype 'Hh' represents one dominant and one recessive allele. This combination results in a heterozygous genotype.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the term used to describe what we physically "see" as a trait in an organism?

• Genotype

• Phenotype

• Allelotype

• Traittype

Answer explanation

Phenotype refers to the physical traits we observe in an organism. It is the term used to describe what we physically 'see' as a trait.

What does the genotype "Aa" represent?

• Homozygous dominant

• Homozygous recessive

• Heterozygous

• Cannot be determined

Answer explanation

The genotype 'Aa' represents heterozygous, which means having two different alleles for a particular gene.

Tags

NGSS.HS-LS3-1

If "D" represents the allele for dimples and "d" represents the allele for no dimples, what is the genotype of a male who is heterozygous for this trait?

• DD

• Dd

• dd

• Cannot be determined

Answer explanation

A male who is heterozygous for the trait of dimples has the genotype Dd, as 'D' represents the allele for dimples and 'd' represents the allele for no dimples. Therefore, the correct genotype is Dd.

Tags

NGSS.HS-LS3-1