1. Drosophila melanogaster has been used as a model organism to study human genetics because: it shares 75% homology with human diseases causing genes. Developmental genes are highly conserved in humans and Drosophila. Certain mutations can affect the same tissue in both the fly and human. Example of homologous genes includes: Hox gene, PAX 6, SALL1, TWIST 1, NKX2-5. Drosophila offers several other advantages that makes it an ideal organism for genetic diseases. The fly is easy to maintain and manipulate. It produces a large number of offspring’s and has a short generation interval that is very favorable ...
Essays on Eye Color
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The concept of beauty is very subjective. What is beauty? Each of us has its own answer to this difficult philosophical question. Beauty cannot be measured, you can only admire it. The wisest people of the world passed many years in disputes about what is true beauty and why you need it. So, Cicero thought that beauty is an inherent property of health. Chekhov thought that in the person everything should be perfect: the face, appeared and the soul. It is hard not to agree with these words. However, you can be ugly, but very charming. A Frenchman and a ...
Test cross
What was the phenotypic ratio for the offspring resulting from this testcross? Results for the F1 generation for monohybrid cross between a female fly with brown eye (BW) color with a male fly having ebony body (E) color are as shown below.
Fly lab Lab Notes for Steven F
Parents (Female: BW) x (Male: E) Offspring Phenotype Number Proportion Ratio Female: + 494 0.5067 1.027 Male: + 481 0.4933 1.000
Total 975
All the offspring had a wild-type phenotype for the brown eyes and ebony body. This shows that, both brown eye and ebony body are recessive genes. The phenotypic ratio for the offspring resulting from the ...
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The culture where I came from is rather a mix of cultures and not just a single one. Because of that it would sometimes occur, not only at my own instance, that my phenotype contains unusual characteristics; characteristics that are not usually seen on the description of the natives who came from our land. First, I would like to start by differentiating phenotype from genotype traits. Though they have some correlations (they are both under a larger umbrella called genetics), they are two different things. Phenotype, according to Blamire (2000), involves the outward physical appearance of an individual organism. These would ...
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