Assignment 10 - AP2 PDF

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AP2 Assignment 10 Name ________________________Nike Howard_____________________ This assignment has 2 parts Part 1 (5 points): refer to chapter 29 section 29.3 and the Punnett square video to help answer questions 1-4. Punnett squares are provided for you to use to help get to the answer, but you do not need to “show” your work 1. __A___ In some bacteria, the allele for an oval shape (A) is dominant over the allele for a round shape (a). What is the correct genotype and/or phenotype for the following cross: heterozygous oval x homozygous round? A. Genotype 50% Aa B. Genotype 25%aa C. Phenotype 25% oval D. Phenotype 25% round

2. __D___ Let’s say the allele for a unibrow is recessive (u) and normal eyebrows are a dominant allele (U). The mother is homozygous recessive and the father is homozygous dominant. What % chance does their offspring have for normal eyebrows? A. 25% B. 50% C. 75% D. 100%

3. __D___ Dimples in the cheeks are a dominant allele D) while absence of dimples are recessive alleles (d). If both parents are heterozygous, what would be the phenotype of their offspring? A. 50% have dimples B. 50% do not have dimples C. 100% have dimples D. 75% have dimples

4. _B____ Let’s say that in felines, orange tabby coloring is dominant (O), and brown tabby coloring is recessive (o). The mother is homozygous recessive, the father is heterozygous. What is the genotype of the parents, and genotype of the offspring? A. Parents: OO, oo; offspring ½ Oo, ½ oo B. Parents: Oo, oo: offspring ½ Oo, ½ oo

Part 2 (20 points) Name the body system(s) that you think is the most important in maintaining homeostasis in the body and explain why. Your explanation should be brief (but certainly more than just a few sentences). You must use your own words, because this reflects your understanding Almost all of the body systems are required to maintain the homeostasis but the most important body system to maintain homeostasis is the Renal. Explanation: Renal system is very important because it corrects most of the changes that occurs in the body, especially electrolyte imbalances. For example, alteration in electrolyte is corrected by renal system. Both acidosis and alkalosis are corrected by renal system. Both the volume overload and hypovolemia are corrected by the renal system. Apart from renal system pulmonary system is also very important in maintaining the homeostasis, especially when it gives oxygen and iron throughout the body and organs....