Pre-assessment: Complex Inheritance

Multiple Choice

Alternative forms of a gene are called

• Alleles

• Homozygous

• DNA

• Genetics

Multiple Choice

The physical appearance of an organism based on traits

• Genotype

• Phenotype

• Meiosis

• Genetics

Multiple Choice

The allele combinations

• genetics
• mitosis
• genotype
• phenotype

Multiple Choice

This trait will always be expressed if present because it will mask the expression of others

• stem cells

• dominant

• recessive

Multiple Choice

The genotype of:  bb   will have the PHENOTYPE of...

• black fur

• white fur

• course hair

• fine hair

Multiple Choice

The genotype of:  AA  will have the PHENOTYPE of...

• albinism

• normal pigment

• albino carrier

Multiple Choice

The genotype of:  Heterozygous Course Hair  will have the alleles of...

• Hh
• HH
• hh

Multiple Choice

The genotype of:  albino carrier  will have the alleles of...

• Aa
• AA
• aa

Multiple Choice

If a trait is recessive, it needs to be inherited from ___ parents to be 'expressed'.

• one
• both

Multiple Choice

Which of the following is heterozygous

• FF
• tt
• Gg
• RR

Multiple Choice

Which of the following is homozygous recessive?

• rr
• AA
• TT
• Ff

​Complex Inheritance and Practice Problems

Incomplete dominance: an interaction between two alleles in which both are partially expressed; this can produce an intermediate or new phenotype.

Co-dominance: an interaction between two alleles in which both traits are expressed.

Multiple Choice

In some chickens, the gene for feather color is controlled by codominance.  The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.​

What is the genotype for black chickens?​

• Black

• BB

• BW

• WW

Multiple Choice

In some chickens, the gene for feather color is controlled by codominance.  The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.​

What is the genotype for white chickens?

• White

• BB

• BW

• WW

Multiple Choice

In some chickens, the gene for feather color is controlled by codominance.  The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.​

What is the genotype for erminette chickens?

• Erminette

• BB

• BW

• WW

Draw

Draw a Punnett Square the shows the cross between two Erminette chickens.

Match

Based on the Punnett square showing the cross between two erminette chickens, Match the following

• Probability offspring will be black

• Probability offspring will be Erminette

• Probability offspring will be white

25%

50%

25%

• 25%

• 50%

• 25%

Match

In snapdragons, flower color is controlled by incomplete dominance.  The two alleles are red(R) and white(r).  The heterozygous genotype is expressed as pink. Match each genotype with its correct phenotype.

• RR

• Rr

• rr

Red

Pink

White

• Red

• Pink

• White

Draw

Draw a Punnett Square showing the cross between a pink flower and a white flowered plant.

Multiple Choice

A pink flower is crossed with a white flowered plant. What is the probability of producing a pink flowered plant?

• 0%

• 25%

• 50%

• 100%

Draw

What cross will produce the most pink flowered plants? Show the Punnett square to support your answer.