Discuss the different stages in Homid evolution.

Homeotic genes aid in development of D. melanogaster by giving a specific identity to each segment. The bithorax complex is a homeotic gene complex that control identity of segments in Select one: the anterior and posterior thorax O b. the head O C. the posterior thorax O d. the head and posterior thorax

3.  a) What is a phylogenetic tree and what information can we gain from studying it? b)What molecules did we explore in the laboratory to provides us with evidence of genetic evolution of fish?

For each of the following, identify whether the statement about Hox genes is true for Drosophila only, vertebrates only, or both Drosophila and vertebrates. Hox genes are present in the genome. Both Drosophila and vertebrat v Different hox genes are expressed in [Choose ] body segments along the anterior- posterior body axis. Duplication has resulted in several hox [Choose] gene clusters in the genome. Hox genes are expressed after gap [Choose ] genes and pair-rule genes.

Given the distribution of Hox genes among animals, what would you predict about the number and type of Hox genes in the common ancestor of all animals?

Cite the approximate number of DNA polymorphismsthat differentiate any two haploid human genomes.

99999393 3385 338 wikimedia commons Some embryos share many similarities and are difficult to tell apart, while others are slightly easier. What can you conclude about the similarities and differences between the embryos of different species? Select one: a. The more closely related species show differences from the earlier stages. b. The more distantly related species share similarities until the later stages. c. The more closely related species share similarities until the later stages. d. The more distantly related species show differences in only the later stages.

What is a genome? Describe the following terms/structures as they pertain to a eukaryotic genome: diploid, haploid, gamete, homologous chromosomes, locus, and genes

Working as an Anthropologist in South Africa, you’ve been given four hominin craniums and are asked to develop a new classification system. Using cranium size, the robustness of the cheek bones and brow ridges, and the prognathism of the face, how would you categorize these four skulls into species? Would you categorize all four of them as belonging to the same genus? Two geneses? Three geneses? Four geneses? Do you believe any of them are the same species? Explain how you would categorize these four specimens. Explain what features you used to categorize these specimens. This is the image of the 4 different hominin individuals

If two otherwise dissimilar organisms share similar genomic DNA, to what would you attribute the genomic similarity? A)DNA is not a reliable basis for phylogenetic decisions. B)The shared genes have evolved a number of times and have no phylogenetic significance. C)The shared genes are ancient and probably no longer function within the altered physiological states of modern organisms. D)The shared genes developed early in evolution and are likely to be applicable to a wide diversity of organisms. E)The two taxa are more closely related than formerly believed because they may share a common ancestor