Inheritance Patterns Review

Which picture shows CODOMINANCE

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Tags

NGSS.HS-LS3-2

Which picture shows INCOMPLETE DOMINANCE?

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What is NOT a possible genotype for someone with type B blood?

• I^BI^B

• I^AI^B

• I^B i

Answer explanation

The genotype I^AI^B represents type AB blood, not type B. Type B blood can have genotypes I^BI^B or I^Bi, making I^AI^B the only incorrect option.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

this image is an example of

• codominance

• dominance

• incomplete dominance

Answer explanation

This image illustrates incomplete dominance, where the phenotype of the heterozygote is a blend of the two parental traits, rather than one trait dominating the other. This is distinct from codominance and simple dominance.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a certain species of plant, the color purple (P) is dominant to the color white (p).

According to the Punnett Square, what is the probability of an offspring being purple?

• 25%

• 0%

• 100%

• 50%

Answer explanation

In this species, purple (P) is dominant over white (p). If both parents are homozygous purple (PP), all offspring will inherit the dominant allele, resulting in a 100% probability of being purple.

Tags

NGSS.HS-LS3-3

What allele combination should go in the missing box?

• AA

• Aa

• aa

• none of these

Answer explanation

The correct allele combination is Aa because it represents a heterozygous genotype, which is often the expected outcome in genetic crosses. AA and aa are homozygous, while 'none of these' does not apply.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What goes in box 3

• Aabb

• AABB

• AAbb

• aaBb

Answer explanation

The correct answer is Aabb because it follows the pattern of one uppercase 'A' followed by two lowercase 'a's and one lowercase 'b'. The other options either have incorrect casing or extra letters.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What goes in box 15

• aabb

• AABB

• aaBB

• AAbb

Answer explanation

The correct answer is 'aabb' because it matches the specified format exactly, using all lowercase letters. The other options contain uppercase letters or mixed cases, which do not fit the requirement.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Using the dihybrid cross and key provided, what is the probability of the offspring being tall and white?

• 9

• 2

• 3

• 6

Answer explanation

In a dihybrid cross, the ratio of phenotypes is 9:3:3:1. The probability of being tall (T) and white (w) is represented by the 3 in the ratio. Thus, the probability of the offspring being tall and white is 3.

Tags

NGSS.HS-LS4-3

Based on the genotypes present in this Monohybrid Punnett square, which eye color is dominant?

• brown

• blue

Answer explanation

In a Monohybrid Punnett square, the dominant trait is represented by a capital letter. If brown is indicated by a capital letter and blue by a lowercase letter, brown is the dominant eye color over blue.

Tags

NGSS.HS-LS3-1