Mastery of Mendelian Genetics and Monohybrid Crosses

In a monohybrid cross between two heterozygous pea plants (Tt), what is the probability of obtaining a pea plant with tall stems (dominant trait)?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-3

Which term describes the physical appearance of an organism as a result of its genotype?

• Karyotype

• Phenotype

• Genotype

• Allele

In a monohybrid cross, if the genotype of the offspring is "Aa", what are the possible genotypes of the parents?

• AA and aa

• Aa and Aa

• AA and AA

• aa and aa

What is the expected genotypic ratio from a monohybrid cross between two heterozygous individuals (Aa x Aa)?

• 1:2:1

• 3:1

• 9:3:3:1

• 1:1

Which of the following is NOT a principle of Mendelian Genetics?

• Law of Segregation

• Law of Independent Assortment

• Law of Dominance

• Law of Polygenic Inheritance

What is the term for the genetic makeup of an organism?

• Phenotype

• Genotype

• Homozygous

• Heterozygous

Tags

NGSS.HS-LS3-2

If a plant with genotype Tt is crossed with a plant with genotype tt, what percentage of the offspring will have the recessive phenotype?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

What is the expected phenotypic ratio from a monohybrid cross between two heterozygous individuals (Tt x Tt) for a trait with complete dominance?

• 1:2:1

• 3:1

• 9:3:3:1

• 1:1

In the context of Mendelian genetics, what does the term "homozygous" refer to?

• An organism with two different alleles for a trait

• An organism with two identical alleles for a trait

• The physical appearance of an organism

• A cross between two different species

Which of the following genotypes is heterozygous?

• AA

• Aa

• aa

• AAA