Mendel and Heredity Flashcard Review

Front

What is Gregor Mendel most well known for?

Back

His experiments with pea plants which showed that certain traits followed predictable patterns of inheritance.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What did Mendel believe determined the characteristics of pea plants?

Back

Inheritance of two alleles, one from each parent plant.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

In cacti, long arms (A) are dominant to short arms (a). If two heterozygous cacti are crossed, what percentage of their offspring are expected to have short arms?

Back

25%.

Tags

NGSS.HS-LS3-3

Front

What is the phenotype of the offspring when a tall plant (TT) is crossed with a tall plant (Tt)?

Back

50% homozygous dominant; 50% heterozygous; 100% tall.

Tags

NGSS.HS-LS3-1

Front

What can be concluded about the trait of a pure black coat in horses when crossed with a pure chestnut coat?

Back

It is recessive.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

Define dominant allele.

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

Define recessive allele.

Back

An allele that expresses its trait only when two copies are present.

Front

What is a Punnett square?

Back

A tool used by biologists to predict the possible genotypes of offspring from a genetic cross.

Tags

NGSS.HS-LS4-3

Front

What is the genotype of a plant with two identical alleles for a trait?

Back

Homozygous.

Front

What is the genotype of a plant with two different alleles for a trait?

Back

Heterozygous.