Three strains of green-seeded lentil plants appear to ha...

Question

Three strains of green-seeded lentil plants appear to have the same phenotype. The strains are designated G₁, G₂, and G₃. Each green-seeded strain is crossed to a pure-breeding yellow-seeded strain designated Y. The F₁ of each cross are yellow; however, self-fertilization of F₁ plants produces F₂ with different proportions of yellow- and green-seeded plants as shown below.

If green-seeded strains G₁ and G₃ are crossed, what are the phenotype and the genotype of F₁ progeny?

If green-seeded strains G₁ and G₃ are crossed, what are the phenotype and the genotype of F₁ progeny?

Accepted Answer

Hello everyone and welcome to today's video. So two strains of a plant that stagnated P one and P to produce flowers of the same color which is purple. Each of these trains is then crossed with a pure breeding strain A which produces pink flowers. The F one progeny plants of each cross have also pink flowers. Software utilization of the F one progeny of each cross resulted in 1/4 of the plants having purple flowers, 3/4 having pink flowers in how many genes variable? A little segregate in the two crosses. Now remember that since we have pure breeding strain A being home aside because it is pure breeding and producing pink flowers. Once we mix it with these P one and P two strains that produce purple flowers, the F one progeny is only going to have pink flowers as shown here. This means that pure breeding strain A is homicide as dominant as displayed. So we're mixing this pure breeding strain A with P one and P two, which produced a different or the recessive phenotype. That means that P one and P two are going to have one of the two genes either A or B being recessive as follows. So now we're told that the F1 generation or the generation resulting for one of these crosses is going to be so fertilized, which leads to a number of phenotype is being produced purple and we have pink. However, notice that if we mix one of these P one or P two strains with the strain A, this is always going to gila hetero sickos organism. It can either be A B B or the following now because only one gene is going to be segregated because only one of the A Leo's is going to be changed. We say that there is variable. A LEOS are going to be segregated into only one gene which is answer choice. A I really hope this video helped you and I hope to see you on the next one.

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