4.1 Name the genotype represented by K in the Punnet square above - NSC Agricultural Sciences - Question 4 - 2017 - Paper 2
Question 4
4.1 Name the genotype represented by K in the Punnet square above.
4.1.2 State the phenotype that could appear in L in the Punnet square above.
4.1.3 Determine the... show full transcript
Worked Solution & Example Answer:4.1 Name the genotype represented by K in the Punnet square above - NSC Agricultural Sciences - Question 4 - 2017 - Paper 2
Step 1
Name the genotype represented by K in the Punnet square above.
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Answer
The genotype represented by K in the Punnett square is SsQq. This indicates that the organism is heterozygous for both traits: hair color (S for black and s for white) and hair length (Q for short and q for long).
Step 2
State the phenotype that could appear in L in the Punnet square above.
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Answer
The phenotype that could appear in L is 'Black Short.' This phenotype is represented by the genotype SSQQ, indicating black hair and short hair.
Step 3
Determine the ratio of white and long hair to all the possible phenotypes.
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Answer
To determine the ratio of white (ss) and long hair (qq), we observe the phenotypic combinations from the Punnett square. The total phenotypes are: 9 (black short) + 3 (black long) + 3 (white short) + 1 (white long) = 16. The only combination for white and long hair is 1 (ssqq). Therefore, the ratio is 1:16.
Step 4
Calculate the percentage of black and short hair in the phenotypes.
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Answer
The total number of phenotypes is 16. The phenotypes that are black and short hair (SSQQ and SSQq) total 9. Hence, the percentage of black and short hair in the phenotypes is calculated as follows:
