3. Because of recombination, sexual reproduction produces more variation than asexual does. Why is this - explain.

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?

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

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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.

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2. An organism is 2n=4 with genotype AaBbEe. Genes A and B are close together on the larger chromosome, and gene E is on the smaller chromosome. a. Using a vertical metaphase plate, draw the two independent orientations of this AaBbEe cell in Metaphase I of Meiosis. b. Label alleles on all chromatids. c. Write the alleles in each possible gamete on the lines below each orientation. OR O'Q ( Gametes: