6) You cross two pure-breeding strains of peas, one with white flowers and the other with purple flowers. All progeny (F1) from this cross have purple flowers. You cross two F1 individuals, harvest the F2 seeds, and plant a row of twelve (12) seeds in your Aunt Mabel's front yard to improve the landscaping. A) What is the probability that out of the ten (10) total plants, any five (5) of the 12 will have white flowers and any seven (7) of the 12 will have purple flowers (4 pts.)? B) What is the probability that three (3) of these seeds will be pure breeding (for either white or purple flowers) (4 pts.)? C) What is the probability that out of the 12 total plants, four (4) at the end of either side of the row will consecutively have white flowers, with the remaining 8 plants having purple flowers (4 pts.)?
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Step 1: Calculate the probability that out of the 12 total plants, any 5 of the 12 will have white flowers and any 7 of the 12 will have purple flowers. Show more…
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In Mendel's pea plant breeding experiments, he crossed pure-bred pea plants that had purple flowers with pure-bred pea plants that had white flowers. The pure-bred violet plant was homozygous for its violet allele (BB). The pure-bred white plant was homozygous for its white allele (bb). So, when the two plants were crossed -- all of the offspring (F1 generation) were heterozygous (Bb) and had purple flowers. If pea plant flower color is a simple or Mendelian trait and alleles for flower color segregate during gamete formation, what ratio of purple flowered to white flowered pea plants should Mendel expect when he crossed the F1 hybrids (purple flowered plants with genotype Bb) with the pure-bred white flowered plants (genotype bb)? You might consider using some form of a Punnett Square to calculate the genotype and phenotype ratios. all plants will have white flowers a 3 to 1 ratio: 3 purple flowered plants to every one white flowered plant a 1 to 1 ratio: about half the offspring will have the genotype Bb and will have purple flowers and about half will have the genotype bb and will have white flowers all plants will have light purple flowers
Maitreya E.
Two flower seeds are randomly selected from a package that contains 7 seeds for red flowers and 12 seeds for white flowers. (Give your answer correct to three decimal places.) (a) What is the probability that both seeds will result in red flowers? (b) What is the probability that one of each color is selected? (c) What is the probability that both seeds are for white flowers?
Sri K.
Case 4: Cross a pea plant that is heterozygous for purple flowers and heterozygous for gray seed coat color with a plant that is homozygous recessive for white flowers and heterozygous for gray seed coat color. Finish the Punnett square to answer the following questions: What are the genotypes of the offspring? What are the phenotypes of the offspring? What is the probability that the offspring will be homozygous recessive for white flowers and homozygous recessive for white seed coat color? What is the probability that the offspring will be heterozygous for purple flowers and heterozygous for gray seed coat color?
Anand J.
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