This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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Here are the solutions to the questions based on the provided Punnett square: Key: S = black (dominant) s = white (recessive) Q = short hair (dominant) q = long hair (recessive) 4.1.1. Name the genotype represented by K in the Punnett square above. K is formed by the combination of the female gamete 'Sq' and the male gamete 'sQ'. Sq + sQ = SsQq The genotype represented by K is SsQq. 4.1.2. State the phenotype that could appear in L in the Punnett square above. L is formed by the combination of the female gamete 'sQ' and the male gamete 'SQ'. sQ + SQ = SsQQ For the genotype SsQQ: 'Ss' results in black colour (S is dominant). 'QQ' results in short hair (Q is dominant). The phenotype that could appear in L is black and short hair. 4.1.3. Determine the ratio of white and long hair to all the possible phenotypes. First, let's identify all the genotypes and their corresponding phenotypes from the Punnett square: | | SQ | Sq | sQ | sq | |-------|--------|--------|--------|--------| | SQ| SSQQ | SSQq | SsQQ | SsQq | | Sq| SSQq | SSqq | SsQq | Ssqq | | sQ| SsQQ | SsQq | ssQQ | ssQq | | sq| SsQq | Ssqq | ssQq | ssqq | Now, let's count the phenotypes: Black, Short hair (S_Q_): SSQQ (1), SSQq (2), SsQQ (2), SsQq (4) = 9 individuals Black, Long hair (S_qq): SSqq (1), Ssqq (2) = 3 individuals White, Short hair (ssQ_): ssQQ (1), ssQq (2) = 3 individuals White, Long hair (ssqq): ssqq (1) = 1 individual The total number of possible phenotypes (offspring) is 16. The number of individuals with white and long hair (ssqq) is 1. The ratio of white and long hair to all possible phenotypes is 1:16. 4.1.4. Calculate the percentage of black and short hair in the phenotypes. From the phenotype count above, the number of individuals with black and short hair (S_Q_) is 9. The total number of possible phenotypes is 16. To calculate the percentage: Percentage = ( Number of black and short hairTotal number of phenotypes ) × 100\% Percentage = ( (9)/(16) ) × 100\% Percentage = 0.5625 × 100\% Percentage = 56.25\% The percentage of black and short hair in the phenotypes is 56.25\%.