- Level: International Baccalaureate
- Subject: Biology
- Word count: 1628
Lab of genetics.You will determine your phenotype and try to determine your genotype for the traits listed below.
Extracts from this document...
Introduction
Human Inheritance Objectives: * Determine your phenotype for several traits. * Determine (as far as possible) your genotype for the same traits. Procedures and Observations: You will determine your phenotype and try to determine your genotype for the traits listed below. Remember, if you have a dominant trait, you may be homozygous or heterozygous fro that trait. If you know that one of your parents has the recessive trait, you must be heterozygous. If neither of your parents have the recessive trait, put a blank (_) for the unknown gene. If you possess the recessive trait, record it as the genotype, with two recessive genes. * Free earlobes are dominant, L. people whose earlobes are attached directly to the side of the head have the recessive genotype, ll. Have your partner check your earlobes. 1. Record your phenotype and genotype in a table. (Remember that if you have the dominant trait, you may not be able to determine whether your genotype is homozygous or heterozygous, in that case, record L_ in the table. The blank means an unknown gene). * Inheritance of eye color is controlled by multiple genes, but people having the homozygous recessive genotype, bb, have blue eyes. ...read more.
Middle
Take a range or a fixed age of the people that is going to be asked. (16 year old). 13. Go person by person recording everyone's traits. RAW DATA: Individual Gender A B C D E F H I J K L 1 M L_ B_ ww R_ tt F_ hh N_ C_ ss pp 2 M L_ B_ ww R_ tt F_ hh N_ cc S_ pp 3 M ll B_ ww R_ tt ff hh N_ C_ S_ pp 4 M ll B_ W_ rr tt ff H_ N_ cc S_ pp 5 M L_ B_ ww R_ tt ff hh N_ C_ S_ pp 6 M L_ B_ W_ R_ tt F_ hh N_ cc ss pp 7 M L_ B_ W_ R_ tt F_ H_ N_ cc S_ pp 8 M L_ B_ ww R_ tt F_ hh N_ C_ S_ pp 9 M L_ B_ ww R_ tt F_ H_ N_ C_ ss pp 10 M L_ B_ ww R_ tt ff hh N_ C_ S_ pp 11 F L_ B_ ww R_ tt ff hh N_ cc S_ pp 12 F ll B_ W_ R_ tt ff H_ N_ C_ ss pp 13 F L_ B_ W_ rr tt ff hh N_ C_ S_ pp 14 F L_ B_ ww R_ ...read more.
Conclusion
This average male or female will have unattached earlobes, may have different shades of brown, hazel, or green eyes, a smooth hairline, will be able to roll tongue but wouldn't be capable of folding it, would have straight little fingers, wouldn't have hair on the middle joint of the fingers, would have any hair color except red, will have curly hair, long eyelashes and five fingers. Errors and improvements Errors Improvements It was difficult to determine whether the eyelashes were long or short because there wasn't a fixed measurement. Establish a measurement that differentiates long eyelashes form short eyelashes. The table was difficult to complete because I needed to check with the information given, which alleles qualify for each characteristic. Design an easier table to recollect data. Only a small quantity of individuals was used and all of them from the same geographical region. Use a grater quantity of individuals from distinct geographical regions, for more reliable data. The makeup, hair treatments and fake eyelashes interfered with the identification of a special trait. Ask if previous make up or fake eyelashes were used to obtain the real and natural results. In general the identification of the traits was very difficult because we didn't have a reference. Show clear images of how the traits were present in different individuals, so that we could have a reference of how they looked. ...read more.
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