Incomplete Dominance

6) If a black chicken and a white chicken are crossed? What is the probability that they will have erminette chicks? Draw a punnet square with the genotype of both parents to answer #6

A) 25% B) 100% C) 75% D) 50% The correct answer is B -100%

10) A pink flowered plant is crossed with a white flowered plant. What is the probability of producing a pink flowered plant? *hint do a punnet square with one parent with white flowers and the other parent with pink flowers.

A) 25% B) 100% C) 75% D) 50% The correct answer is D -50%

In Incomplete Dominance, what happens to the phenotype expressed?

-It falls between two possible parent phenotypes -this means that it will not get the physical characteristics of one parent but instead will have the characteristics of both parents

How do you write the letters for a codominant punnet square?

-The genotype for both parents will be capital letters since each parent is equally dominant -example with cows is RR x WW -when you cross them, your genotype will be RW for each or the four cow offspring and the phenotype is rhone cows

Incomplete Dominance

-When the dominant trait does not completely mask the recessive trait -in other words when one allele is not completely dominant over the other

4) If two erminette chickens were crossed, what would the probability be that they would have a black chicken? Draw a punnet square with the genotype of both parents to answer #4 & #5

A) 25% B) 50% C) 75% D) 100% Correct answer is A -25%

5) If two erminette chickens were crossed, what would the probability be that they would have a white chicken? Draw a punnet square with the genotype of both parents to answer #4 & #5

A) 75% B) 50% C) 25% D) 100% Correct answer is C -25%

1) In some chickens, the gene for feather color is controlled by codominance. The allele for black feathers is B and the allele for white feathers is W. The heterozygous phenotype (physical trait or color that results from these two parents) is called erminette. What is the genotype for chickens with black feathers?

A) Bb B) BB C) WW D) WB Correct answer is B -BB

11) What cross will produce the most pink flowered plants? *show your punnet square

A) RRxWW B) RRxRR C) WWxWW D) RWxRW The correct answer is A -RRxWW

7) In snapdragons, flower color is controlled by incomplete dominance. The two alleles are Red (R) and White (W). The heterozygous genotype is expressed as pink. What is the phenotype of a plant with a genotype of RR?

A) Red B) Pink C) White D) all of the above The correct answer is A -Red

9) In snapdragons, flower color is controlled by incomplete dominance. The two alleles are Red (R) and White (W). The heterozygous genotype is expressed as pink. What is the phenotype of a plant with a genotype of RW?

A) Red B) Pink C) White D) all of the above The correct answer is B -Pink

8) In snapdragons, flower color is controlled by incomplete dominance. The two alleles are Red (R) and White (W). The heterozygous genotype is expressed as pink. What is the phenotype of a plant with a genotype of WW?

A) Red B) Pink C) White D) all of the above The correct answer is C -White

2) In some chickens, the gene for feather color is controlled by codominance. The allele for black feathers is B and the allele for white feathers is W. The heterozygous phenotype (physical trait or color that results from these two parents) is called erminette. What is the genotype for chickens with white feathers?

A) Ww B) bb C) ww D) WW Correct answer is D -WW

3) In some chickens, the gene for feather color is controlled by codominance. The allele for black feathers is B and the allele for white feathers is W. The heterozygous phenotype (physical trait or color that results from these two parents) is called erminette. What is the genotype for an erminette chicken?

A) bw B) BB C) WW D) BW Correct answer is D -BW

13) What does genotype mean?

A) genetic cross B) physical trait The correct answer is B -physical trait

12) What does phenotype mean?

A) genetic crosses B) physical trait The correct answer is B -physical trait

17) If you cross a red plant with a white plant and the offspring is pink, what is that called?

A. Incomplete dominance B. Polygenic inheritance C. Codominance D. Multiple alleles The correct answer is A -incomplete Dominance

14) A cross of a white chick (WW) with a black chick (BB) produces all speckled offspring (WB) This type of inhetitance is known as:

A. Incomplete dominance B. Polygenic inheritance C. Codominance D. Multiple alleles The correct answer is C -Codominance

20) Blood is determined by individual combinations of the following gene varieties.IA,IB,and i . When IA and IB exist together, they make blood type AB (which has 2 dominant genes). This shows us that blood type is an example of.

A. Polygenic Traits B. Multiple Alleles C. Incomplete Dominance D. Co-Dominance The correct answer is D -codominance

18) Which of the following means having more than 2 versions of alleles for genes?

A. Polygenic inheritence B. Multiple alleles C. Incomplete dominance D. Codominance The correct answer is: D -codominance

19) Organisms that have two identical alleles for a particular trait are said to be

A. Homozygous B. Dominant C. Hybrid D. Heterozygous The correct answer is A -homozygous

16) What plants have Heterozygous genotypes?

A. TT only B. Tt C. Both TT and tt D. tt only The correct answer is B -Tt

15) What plants have Homozygous genotypes?

A. TT only B. Tt C. Both TT and tt D. tt only The correct answer is C -both TT and tt

What occurs when both alleles for a gene are expressed completely?

Codominance

What is the difference between a codominance problem and an incomplete Dominance problem?

Codominance will have both parents with a genotype with all capital letters (homozygous dominant) -example: cows would be BBxWW Incomplete dominance will result in offspring having a mix of the traits of the two parents -example parents are RR and dd snapdragons. Offepring result in Rd meaning offspring has pink flowers because it received traits from botb parebys because one wasn't completely dominant over the other

In codominance, what does the phenotype show?

Evidence of both alleles being present -example with types of cows: striped, spotted, motted, erminette

How do you find out the results of an Incomplete Dominance (one big letter and one little letter for the genotype --> example: Rr) study?

Make a punnet square just like you did when you made them for complete dominence problems

What happened as a result of the expansion of genetics that happened as a result of the chromosome theory of inheritance?

Incomplete dominance

What happens in Incomplete Dominance when you have a heterozygous genotype for a trait?

It will show a combination of the dominant and recessive traits since neither is fully dominant