Mendel Laws and Punnett Squares

Imagine two pea plants are crossed, one with green peas and the other with yellow peas. What is the purpose of using a Punnett Square in this scenario?

• To predict the weather

• To determine the possible genetic outcomes of the cross between the two pea plants

• To calculate the probability of the offspring inheriting a particular trait

• To map out the chromosomes of the pea plants

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If a purebred tall pea plant (TT) is crossed with a purebred short pea plant (tt), what will be the genotype of the offspring?

• TT

• Tt

• tt

• Tt and tt

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In a dihybrid cross between two heterozygous pea plants (AaBb x AaBb), where 'A' represents the dominant allele for tall height and 'a' the recessive allele for short height, and 'B' represents the dominant allele for yellow pods and 'b' the recessive allele for green pods, what is the probability of producing an offspring with the genotype AaBB?

• 1/16

• 1/8

• 1/4

• 3/16

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Imagine a garden where you are observing pea plants. According to the Law of Segregation, how do these plants inherit traits such as flower color?

• Alleles for different traits segregate independently during the formation of gametes in the pea plants.

• Two alleles for each trait, like flower color, separate during meiosis in the pea plants.

• The flower color of pea offspring is a blend of the parents' flower colors.

• Only the dominant allele for flower color is expressed in the pea plants' phenotype.

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Imagine a garden with various tomato plants. Some tomatoes are red, and some are yellow. What best describes the difference between the reasons some tomatoes are red and some are yellow?

• Phenotype refers to the color of the tomatoes, while genotype refers to the genetic makeup that determines the color.

• Genotype is determined by the soil quality, while phenotype is determined by the genes of the tomato plants.

• Phenotype and genotype regarding the color of tomatoes are the same thing.

• Genotype refers to the color of the tomatoes, while phenotype refers to the genetic makeup that determines the color.

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