Activity 4. Monohybrid Cross Using the Punnett Square Directions: Read the situation and answer the questions that follow. Write your answers on a separate sheet of paper. Situation: A homozygous red Santan flower (RR) is crossed with a homozygous pink Santan flower (rr). Tasks: 1. Show the given cross using the Punnett square. 2. Write the genotypes and phenotypes of the resulting offspring.
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The Punnett square for this cross would look like this: | | R | R | |---|---|---| | r | Rr | Rr | | r | Rr | Rr | Show more…
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Dihybrid Cross - In garden peas, tall (T) vine is dominant over short (t) vine. Yellow (Y) is dominant over green (y) seed color. Cross a heterozygous tall, yellow seeded plant with a heterozygous tall, yellow seed plant. - Genotype for both parents = - Step 1: Find the potential alleles of the gametes from each parent.
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Use the interactive Punnett Squares, Level 2 to answer the questions. Suppose the parents indicated in the interactive produced 224 peas. Determine the expected number of yellow and wrinkled offspring. expected number of yellow and wrinkled offspring: 56 Now, suppose one of the pea plants is homozygous recessive for both genes, resulting in the cross Yy Rr x yy rr. Calculate the percentage of green and round offspring. green and round offspring: % Suppose one of the pea plants is homozygous recessive for seed color, resulting in the cross Yy Rr x yy Rr. Select the correct phenotypic ratio for the offspring. 6 yellow, round : 2 yellow, wrinkled : 6 green, round : 2 green, wrinkled 9 yellow, round : 3 yellow, wrinkled : 3 green, round : 1 green, wrinkled 4 yellow, round : 4 yellow, wrinkled : 4 green, round : 4 green, wrinkled 6 yellow, round : 6 yellow, wrinkled : 2 green, round : 2 green, wrinkled
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