Probability Inheritance

PROBABILITY INHERITANCE Question and Answer 2023. Mendel crossed two plants that were heterozygous for the purple flower color. Which genotypes could he have used to represent the cross? PP ´ PP Pp ´ Pp pp ´ pp Pp ´ PP Correct Answer: Pp ´ Pp In pea plants, tallness (T) is dominant to shortness (t). What is the predicted genotypic ratio of the offspring if a homozygous short plant is crossed with a heterozygous tall plant? 25 percent Tt, 75 percent tt 25 percent tall, 75 percent short 50 percent Tt, 50 percent tt 50 percent tall, 50 percent short Correct Answer: 50 percent Tt, 50 percent tt The offspring of a particular cross are 100 percent heterozygous for tallness. What were the most likely genotypes of the parents? Tt ´ tt Tt ´ Tt tt ´ tt TT ´ tt Correct Answer: TT ´ tt Why did Gregor Mendel study pea plants? They exhibit only a single trait. They produce flowers. They are easy to grow. They reproduce sexually. Correct Answer: They reproduce sexually. Which includes the physical characteristics of an organism? gene allele genotype phenotype Correct Answer: phenotype The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. In this cross, tallness (H) is dominant to shortness (h). Based on the Punnett square, what is the phenotype of the offspring? Hh HH tall short Correct Answer: tall