Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Science
Document related concepts
Transcript
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.
