You are a wildlife biologist researching black rhinos. During your time in Africa, you have observed two particular traits that allow some black rhinos to be better adapted to their environment. The first trait is an extra-long prehensile lip that enables the rhino to have more efficient browsing capabilities than rhinos with the usual size prehensile lip. Second, some of the rhinos in the study have extra-large ears that allow them to hear a potential predator earlier than rhinos with normal size ears. If you could breed black rhinos that have both of these good traits (an extra-long prehensile lip (P) and bigger ears (E), it wouldincrease their chance for survival in the wild. You have chosen the following two rhinos to enter into a breeding program for the two desired phenotypic traits. It has been determined (based on your previous research) that both the desired traits are homozygous recessive. Parent 1: Heterozygous dominant for prehensile lip trait. Heterozygous for the longer ear trait. Parent 2: Heterozygous for the prehensile lip trait. Homozygous recessive for the extra- large eared trait. 1. Create and solve the dihybrid cross/ punnett square. 2. Determine the possible genotype(s) that will produce individuals without an extra-long lip trait and do not express the extra-large ear trait. What is the frequency that each of these genotype(s) occur in the dihybrid cross? 3. Determine the possible genotypes(s) that will produce individuals that have a normal lip and the extra-large ears. What is the frequency that each of these genotype(s) occur in the dihybrid cross? 4. What is the ratio between rhinos that have normal prehensile lips and ears to those that have the normal lip but extra-large ears?
You are a wildlife biologist researching black rhinos. During your time in Africa, you have observed two particular traits that allow some black rhinos to be better adapted to their environment. The first trait is an extra-long prehensile lip that enables the rhino to have more efficient browsing capabilities than rhinos with the usual size prehensile lip. Second, some of the rhinos in the study have extra-large ears that allow them to hear a potential predator earlier than rhinos with normal size ears. If you could breed black rhinos that have both of these good traits (an extra-long prehensile lip (P) and bigger ears (E), it would
increase their chance for survival in the wild. You have chosen the following two rhinos to enter into a breeding program for the two desired
1. Create and solve the dihybrid cross/ punnett square.
2. Determine the possible genotype(s) that will produce individuals without an extra-long lip trait and do not express the extra-large ear trait. What is the frequency that each of these genotype(s) occur in the dihybrid cross?
3. Determine the possible genotypes(s) that will produce individuals that have a normal lip and the extra-large ears. What is the frequency that each of these genotype(s) occur in the dihybrid cross?
4. What is the ratio between rhinos that have normal prehensile lips and ears to those that have the normal lip but extra-large ears?
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