You have four strains, and you test for growth on the following medias: Rich, Minimal, Minimal + Lysine, Minimal + Histidine, and Minimal +Lysine and Histidine. The table below shows your results. Strain Rich 1 2 3 4 Strain 1 Minimal Strain 2 Growth No Growth Growth Growth No Growth No Growth Growth Growth Min + Lysine Lysine auxotroph only Growth Histidine auxotroph only Min + Histidine Strain 3 is not an auxotroph, but a pro No Growth Strain 4 Is an auxotroph, but not for ly ✓ No Growth Growth Determine whether each strain is auxotroph or a prototroph, and if an auxotroph what sort of auxotroph? Min + Lysine and Histidine Growth No Growth No Growth No Growth No Growth Growth Growth Growth

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You have four strains, and you test for growth on the following medias: Rich, Minimal, Minimal +
Lysine, Minimal + Histidine, and Minimal +Lysine and Histidine. The table below shows your results.
Strain Rich
1
2
3
4
Minimal Min + Lysine
Strain 2
Growth No Growth Growth
Growth No Growth No Growth
Strain 4
Growth Growth
Strain 1 Lysine auxotroph only
Growth
Histidine auxotroph only
Strain 3 is not an auxotroph, but a pro
Min +
Histidine
No Growth
Is an auxotroph, but not for ly ✓
No Growth
Growth
Determine whether each strain is auxotroph or a prototroph, and if an auxotroph what sort of
auxotroph?
Min + Lysine and
Histidine
Growth No Growth No Growth No Growth No Growth
Growth
Growth
Growth
Transcribed Image Text:You have four strains, and you test for growth on the following medias: Rich, Minimal, Minimal + Lysine, Minimal + Histidine, and Minimal +Lysine and Histidine. The table below shows your results. Strain Rich 1 2 3 4 Minimal Min + Lysine Strain 2 Growth No Growth Growth Growth No Growth No Growth Strain 4 Growth Growth Strain 1 Lysine auxotroph only Growth Histidine auxotroph only Strain 3 is not an auxotroph, but a pro Min + Histidine No Growth Is an auxotroph, but not for ly ✓ No Growth Growth Determine whether each strain is auxotroph or a prototroph, and if an auxotroph what sort of auxotroph? Min + Lysine and Histidine Growth No Growth No Growth No Growth No Growth Growth Growth Growth
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