Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 38.3, Problem 3CC
WHAT IF? Ø In a few species, chloroplast genes are inherited only from sperm. How might this influence efforts to prevent transgene escape?
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Describe the similarities and differences between homologousrecombination involving sister chromatid exchange (SCE) and thatinvolving homologs. Would you expect the same types of proteinsto be involved in both processes? Explain.
Mapping a new mutation on the same chromosome as the mapping genes: Scenario 1
1. If the m mutation is in a gene on the same chromosome as a and b,
as shown here, what would be the expected genotype(s) and
phenotypes of the F1 individuals?
m+b
+a+
+
m++
+ab
Scenario 1:
emk
2. If individuals from this F1 generation self-fertilize, what genotypes and phenotypes of progeny would
you expect in the F2 generation? Assume that the m, a, and b genes are all linked but you don't need to
calculate exact frequencies of each genotype/phenotype.
Parental gametes will be m++ or +ab
Recombinant metes will be m+b or +a+ if there is a crossover between a and b
Or mab and +++ if there is a crossover between m and a
The most common categories will be combinations with the parental gametes
+a+ wild-type
m+b M-only
+ab wild-type
m++ M-only
mab M-only
+++ wild-type
+a+
+a+ A-only
m+b B-only
+ab AB
m++ wild-type
mab AB
+++ wild-type
+a+ wild-type
m+b MB
mab MB
+++ wild-type
A-only
m+b wild-type
mab A-only…
Chapter 38 Solutions
Campbell Biology (11th Edition)
Ch. 38.1 - Distinguish between pollination and fertilization.Ch. 38.1 - Prob. 2CCCh. 38.1 - MAKE CONNECTIONS Does the life cycle of humans...Ch. 38.2 - What are three ways that flowering plants avoid...Ch. 38.2 - Prob. 2CCCh. 38.2 - Prob. 3CCCh. 38.3 - Compare traditional plant-breeding methods with...Ch. 38.3 - Why does Bt maize have less fumonisin than non-GM...Ch. 38.3 - WHAT IF? In a few species, chloroplast genes are...Ch. 38 - What changes occur to the four types of floral...
Ch. 38 - Prob. 38.2CRCh. 38 - Prob. 38.3CRCh. 38 - A fruit is (A) a mature ovary. (B) a mature ovule....Ch. 38 - Prob. 2TYUCh. 38 - Double fertilization means that (A) flowers must...Ch. 38 - Prob. 4TYUCh. 38 - Prob. 5TYUCh. 38 - A small flower with green petals is most likely...Ch. 38 - The black dots that cover strawberries are...Ch. 38 - DRAW IT Draw and label the parts of a flower.Ch. 38 - Prob. 9TYUCh. 38 - Prob. 10TYUCh. 38 - SCIENCE, TECHNOLOGY, AND SOCIETY Humans have...Ch. 38 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 38 - SYNTHESIZE YOUR KNOWLEDGE This colorized SEM shows...
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- need helparrow_forward. Genomes A, B, and C all have basic chromosomenumbers (x) of nine. These genomes were derivedoriginally from plant species that had diverged from each other sufficiently far back in the evolutionarypast that the chromosomes from one genome can nolonger pair with the chromosomes from any other genome. For plants with the following kinds of euploidchromosome complements, (i) state the number ofchromosomes in the organism; (ii) provide terms thatdescribe the individual’s genetic makeup as accurately as possible; (iii) state whether or not it is likelythat this plant will be fertile, and if so, give the number of chromosomes (n) in the gametes.a. AABBCb. BBBBc. CCCd. BBCCe. ABCf. AABBCCarrow_forwardAs shown in Figure 13-14, what is the fundamental distinction between a pair-rule gene and a segment-polaritygene?arrow_forward
- In Meselson and Radding modified Holliday model, following branch migration, what are the possible number of heteroduplex regions that can occur? 3 4arrow_forward22nnarrow_forwardEC4. In a test-cross of trihybrid drosophila the following phenotypes and number of offspring were found. Without doing any calculations, answer the following questions: +++ 669 abc 653 ++c 121 ab+ 139 +b+ 2280 a+c 2215 +bc 3 a++ 2 a) What were the genotypes of the parental strains? (fill in) b). What is the gene order?arrow_forward
- Explain pressure flow hypothesis of translocation of sugars in plants.arrow_forwardAsap no plagiarism on explanation i will double checkarrow_forwardThe mitochondrial genome of Chlamydomonas contains the lowest number of genes, 12, of all the species of green algae. However, only 7 proteins are produced inside these mitochondria. Which of the following statements is the best explanation for why only 7 proteins are made from the 12 genes In Chlamydomonas mitochondria? OA Five of the genes are redundant; another copy is expressed from the nuclear genome.. OB. Five of the genes are nonfunctional "pseudogenes". OC Five of the genes are transcribed, but not translated. OD. Five of the genes are coding for proteins that are translated in the cytoplasm. Reset Selectionarrow_forward
- VISUALIZE Use two different colors to depict the unduplicated chromosomes of species C with larger chromosomes (2n = 8) and species D with slightly smaller chromosomes (2n = 10), and of their F1 hybrid. Is the hybrid likely to be fertile?arrow_forwardWould you simply answer the question for me, i saw many answers for it but still not sure. The flower color of genetically identical hemp plants (clones) is purple when the flowers develop under cold environment (30 °C). Describe in detail a molecular mechanism that could explain how these two groups of genetically identical plants differ in their gene expressions to produce different flower colors?arrow_forwardCan someone help with this question?arrow_forward
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