Question

1. Sequence data from OTUs are provided in the table below with values provided as (percentage distance x 1000) measurements. Determine the phylogenetic tree from the data in the table below using the UPGMA procedure mentioned in class.

2. You are studying a disorder that is based on the genetic composition at three loci. Assume that a dominant allele at any locus adds 7 units of risk for the disorder and that a recessive allele at any locus adds 3 units of risk for the disorder. Individuals with 27 or more units of risk develop the disorder. The environment does not affect the presence or absence of this disorder.

How many risk units will be present in an individual of genotype AabbCc?

Berentstain Bear Care Bear Gummi Bear Paddington Bear Berenstain Bear Care Bear Gummi Bear Paddington Bear 80 120 160 40 140 150 Place each OTU in the correct box on the appropriate tree below. Do not label the incorrect tree Care Bear Gummi Bear Berenstain Bear Paddington Bear

Answer 1

Answer 1:)

From the table, Berenstain bear and paddington bear are 160 units apart. Therefore, they will get the farthest part in the 1^st phylogenetic tree. Care bear and Gummi bear are 40 units apart; therefore, they get closer position.

In the second phylogenetic tree, moving from up to down, first care bear will come and in last paddington bear will come because both bears have 160 units distance. Gummi bear will come on 2^nd position because Care bear and Gummi bear are 40 units apart.

Berenstain bea Paddington bear Big distance First phylogenetic tree Care bear Smaller distance Gummi bear Care bear Gummi bear Paddington bear Second phylogenetic tree Berenstain bea Paddington Bear Care Bear Gummi Bear Berenstain Bear

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