Essays on Enamel

Patterns of Inheritance

A homozygous brown mink was crossed with a silverblue mink. Brown (B) is dominant to silverblue. There were 9 offspring. What color were they? (B) Two of the offspring were mated. What would the ratio of brown to silverblue offspring be? What fraction of the offspring will be homozygous brown? Heterozygous? Homozygous recessive?

Let B represent the allele for brown color and b represent the allele for silver blue

Punnet square between homozygous brown mink and silver mink homozygous brown mink X Silver mink bb X BB

All the 9 offspring were brown

Mating two of the offspring Punnet square showing f1 generation will be as follows Bb X Bb Ratio of brown to silverblue is 3: 1 Fraction of homozygous ...

Describe which general fossil primate groups appear and radiate during the following geological epochs: Eocene, Miocene, Pliocene, Pleistocene. For each of the geological epochs, identify the general primate group that first appears and radiates during that epoch. In addition, give the time range in millions of years for each epoch and provide at least one example of a specific primate genus and/ or species that is representative of each general primate group. 2. List and briefly describe at least five elements of the post-cranial anatomy found in humans, but not in apes, that facilitate efficient bipedal locomotion. Provide specific ...

Introduction

Tooth development involves a complex process whereby teeth are formed from embryonic cells, and then eventually mature after erupting as evident in the mouth (Eckhardt, Jágr, Pataridis, & Mikšík, 2014). The development usually originates from mesoderm and ectoderm. At the ectoderm found in the oral cavity, there is the development of enamel and other tissues also come from associated mesenchyme. All teeth don’t develop at the same time, but rather in stages (Eckhardt, Jágr, Pataridis, & Mikšík, 2014). First buds are always observed in the region of anterior mandible, followed by anterior maxillary area then finally ...

Ishtar Gate was built in Babylon in 575 BC, during the reign of Nebuchadnezzar and is a great arch of bricks, covered with bright blue enamel. Arch walls are decorated with sacred animals, dragons and bulls, which the Babylonians considered satellites of the gods. Fragments of the gate are now in various museums around the world: in the Istanbul Archaeological Museum, the Louvre, in New York, Chicago; in Boston reliefs of lions, dragons and bulls are stored; in Detroit, at the Museum of Fine Arts, relief of sirrush is stored. A copy of the Ishtar Gate in Iraq is ...