Question

Help please im in flvs and im stuck on this help please

Test variable (independent variable):
Outcome variable (dependent variable):

Data:
Record the data from each trial in the data chart below. Be sure to fill in the chart completely.
Test One
Parent 1:
Parent 2: Ff




Phenotype ratio:
________ : ________
short fur : long fur


Test Two
Parent 1: Ff
Parent 2: Ff




Phenotype ratio:
________ : ________
short fur : long fur


Test Three
Parent 1: ff
Parent 2: ff




Phenotype ratio:
________ : ________
short fur : long fur

Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please write in complete sentences.
1. Which genotype(s) and phenotype for fur length are dominant?
2. Which genotype(s) and phenotype for fur length are recessive?
3. If you have a hamster with short fur, what possible genotypes could the hamster have?
4. If you have a hamster with long fur, what possible genotypes could the hamster have?
5. Did your data support your hypotheses? Use evidence to support your answer for each test.
o Test One:
o Test Two:
o Test Three:
6. Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents.

Answer 1

• Test variable (independent variable): Genotypes of parent hamsters for fur length (Ff and ff)

• Outcome variable (dependent variable): Phenotype ratio of offspring for fur length (short fur and long fur)

Data:

Test One

Parent 1: Ff

Parent 2: Ff

Phenotype ratio:

3 : 1

short fur : long fur

Test Two

Parent 1: Ff

Parent 2: Ff

Phenotype ratio:

3 : 1

short fur : long fur

Test Three

Parent 1: ff

Parent 2: ff

Phenotype ratio:

All offspring have short fur

Conclusion:

1. The genotype Ff for fur length is dominant.

2. The genotype ff for fur length is recessive.

3. If a hamster has short fur, it could have either the homozygous recessive genotype (ff) or the heterozygous genotype (Ff).

4. If a hamster has long fur, it must have the homozygous dominant genotype (FF).

5. The data supported the hypotheses. In Test One and Test Two, the phenotype ratio was 3:1 for short fur and long fur, indicating that the Ff genotype for fur length is dominant. In Test Three, all offspring had short fur, indicating that the ff genotype for fur length is recessive.

6. The parents of the mystery hamster must be Ff and ff. The mystery hamster has short fur, which means it must have inherited the recessive f allele from one parent and the dominant F allele from the other parent. The only possible combination for this is Ff (heterozygous) and ff (homozygous recessive).