The genomes of chimpanzees and humans are over _________ percent alike. Of the genes that are different is one that is needed for proper ______ development, which probably played an important role in human development.   2. The human genome contains _____ genes, that are translated into _____ different proteins.   3. The cholesterol-fighting drug Lipitor, which is prescribed for patients with high chloresterol levels, works by inhibiting an enzyme needed for the body to

216 Inquiry into Life Laboratory Manual, 16th Edition ©2020 Mader Experimental Procedure: Wing Length and Body Color in Drosophila If your instructor has frozen flies available, cross out the numbers in Table 22.4 and use the stereomicroscope or a hand lens to count the flies of each type given in Table 22.4. Otherwise simply use the data supplied for you in Table 22.4. Table 22.4 Wing Length and Body Color in Drosophila* Phenotypes Long Gray Long Ebony Short Short Phenotypic Gray Ebony Ratio Number of offspring 28 32 28 30 Class data 128 120 120 120 *Wings and body are understood in this table. Conclusions: Wing Length and Body Color in Drosophila • Calculate the actual phenotypic ratio based on the data and record in Table 22.4. Do the results differ from the expected ratio per individual data?. Per class data? Explain your answer. Two-Trait Genetics Problems 1. In tomatoes, tall is dominant and short is recessive. Red fruit is dominant and yellow fruit is recessive. Choose a key for…

ACTIVITY 1: Monohybrid cross in corn In corn the allele for purple seed (P) is dominant and the allele for yellow seed (p) is recessive. What is the genotype for true-breeding purple corn? true-breeding yellow corn? If true-breeding (homozygous) purple corm is crossed with true- breeding yellow corn, Use the Punnett square below to predict the results of the F1 offspring (male gametes on top, female on left): What is the phenotype of the F,? What is the genotype of the F,? Use the Punnett square below to predict the results of the F, (male gametes on top, female on left) Probability Genotype Phenotype

Suppose a mutation affects an enzyme that is required to repair the damage to DNA caused by the loss of purine bases. the loss of a purine occurs about 5000 times in the DNA of each of your cells per day. as the average difference in DNA sequence between humans and chimpanzees is about 1%, how long will it take you to turn into an ape? What is wrong with this argument?