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SC12.3.2.dB04DOK1OPS2R How many daughter cells are present at the end of meiosis? A. 1 B. 2 C. 4 D. 8 Answer: C. 4 SC12.3.2.dB04DOK1OPS2R What is the genotype in the bottom left-hand quadrant in Figure 10-6? Figure 10-6 A. rr B. Rr C. R_ D. RR Answer: B. Rr SC12.3.2.dB04DOK2OPS2R If two heterozygous parents mate, what is the most common genotype of their offspring? A. AA B. A_ C. Aa D. aa Answer: C. Aa SC12.3.2.dB04DOK2OPS2R If a garden pea has a diploid number of 14, how many chromosomes are in a garden pea plant’s leaf cell? A. 3.5 B. 7.0 C. 14.0 D. 28.0 Answer: C. 14.0 SC12.3.2.dB04DOK2OPS2R If a garden pea has a diploid number of 14, how many chromosomes are in a garden pea plant’s egg cell? A. 3.5 B. 7.0 C. 14.0 D. 28.0 Answer: D. 7.0 SC12.3.2.dB04DOK2OPS2R Why did Mendel always start with pure/true breeding plants? Answer: Mendel used true breeding plants to guarantee the genotype of the individual. He used the true breeding plants as a control for his experiments. SC12.3.2.dB04DOK3OPS3R Males = Females = Exhibits the trait = Mating = or Figure 3 Explain the appearance of the trait in individual III-2 in the figure 3 above, in terms of generation I and II. Answer: The trait is recessive and will only appear when paired with another recessive allele, therefore the individuals II-1 and II-2 must both be carriers of the trait. At least one individual from generation 1 will have to be a carrier, to pass the trait to individual II-2. SC12.3.2.dB04DOK3OPS3R Males = Females = Exhibits the trait = Mating = Figure 4 or What is the genotype of individual III-1 and III-2? A. Aa and Aa B. AA and AA C. Aa and aa D. A_ and A_ Answer D. A_ and A_ SC12.3.2.dB04DOK3OPS3R Males = Females = Exhibits the trait = Mating = or What additional phenotypic/genotypic information is needed to determine the genotype of the individual III-1? Answer: A recessive offspring indicating a heterozygous genotype for individual III-1. SC12.3.2.dB04DOK4OPS4R Predict the impact on human life if gametes became diploid? Answer: If sexual reproduction occurred there would be an excess of chromosomes. Excess chromosomes can cause defects or be fatal. The chromosomes were not passed correctly from parent to offspring in a way that the offspring would be able to reproduce. Over time humans would die without an offspring to carry on the genetic material.