In 2002, Trask et al. published a study showing that a high frequency of HIV transmissions in Lusaka, Zambia occurred between ma
rriage partners. Specifically, they studied a cohort of married couples where, at the beginning of the study, one partner was infected and the other was not. Later, the uninfected partner became infected. If you were doing this study, how could you use phylogenetic methods to determine whether the newly infected individual was likely infected by his/her partner? Briefly describe your study design and results that would support and results that would refute (you can use drawings if you wish) the partner-partner transmission scenario.
blood samples from each partner will be collected and sequence for HIV genes. Sequences from other locally circulating HIV strains will be sort for. A phylogenetic tree will be build for easy comprehension
Support for partner-partner transmission:
the strains of the initially infected partner will be nested with the newly infected partner's strains
Refute:
strains different from those carried by the partner would be more closely related to that of newly infected partner's
Answer:If plants were only exposed to green light the rate photosynthesis would decrease. amount of carbon dioxide would increase.
Explanation:
Chlorophyll a: This is the most abundant pigment in plants. Chlorophyll absorbs light with wavelengths of 430nm(blue) and 662nm(red). It reflects green light strongly so it appears green to us.
