Compare the male and female flies. Give a good photo of each, and describe 3 phenotypic differences.

3. In poultry, a gene C produces creeper (very short legs) in the heterozygous condition and is lethal in the homozygous condition. The c allele of the gene produces normal legs in the homozygous condition. Barring is due to a dominant sex-linked gene, B, and nonbarred to its recessive allele, b. In chickens, males are ZZ (similar to XX) and females are ZW (similar to XY). A creeper male homozygous for barring is mated with a creeper female who is nonbarred. What kinds of offspring can be expected from this cross and in what proportions will each kind occur?

5. Analyze the following statements and identify which statement is correct. a. Mitosis is responsible for the formation of gametes b. Meiosis is responsible for the formation of somatic and Mitosis is responsible for the formation of gametes cells c. Meiosis is responsible for the formation of gametes and somatic cells d. Meiosis is responsible for the formation of gametes and Mitosis is responsible for the formation of somatic cells

2. For each genotype, identify whether it is haploid or diploid. Haploid or diploid? Ss Haploid or diploid? WW Ww rr Ww Tt W Ts wH 3. For each genotype, identify whether it is homozygous dominant (HD), heterozygous (Ht) or homozygous recessive (Hr). HD, Ht or Hr? HD, Ht or Hr? Ss WW GG Pp XHXh rr X:X: LL

1. Based on type, which of the following human cells are diploid? Select all that apply. intestine stomach female sex cell bone ☐male sex cell

Answer Space In the answer space on the right, draw in the chromosomes of cell A. Your drawing should show the usual result of the process of meiosis.

11. What are the three types of asexual reproduction? 12. Define gamete and zygote. What number of chromosomes does each have? 13. Outline the phases of meiosis.

4. Why is a gene mutation in a gamete usually more of a concern than a mutation in a somatic cell (i.e. a body cell, other than a sperm or egg)? 5. If a mutation occurred in a gene during gamete formation, resulting in a recessive allele, what would it take for an offspring to express the recessive phenotype? If a mutation occurred in a gene during gamete formation, resulting in a dominant allele, what would it take for an offspring to express the dominant phenotype? 6. In gene therapy an attempt is made to transfer a “normal" gene into the cells of a person who lacks copies of the “normal" gene. Why would scientists and the government be more receptive to somatic gene therapy than to germline gene therapy? 7. 8. Answer the following questions for the two following pedigrees а. In Pedigree A, is the red highlighted trait dominant or recessive? Why? b. What is the genotype of individual C? а. In Pedigree B, is the red highlighted trait dominant or recessive? Why? d. What is the genotype…