different phenotypes would be a blend of the parental types and variation would be lost from the population. Natural selection will not work under the blending theory of inheritance‚ because there would be a. only two alleles. b. no crossing over. c. incomplete penetrance. d. insufficient variation. e. astronomical mutation rates. 3. The western honey bee or European honey bee (Apis mellifera) is a species of honey bee
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results fit the expected results) Alternative hypothesis - If the observed data does not fit the expected data the results obtained were not significant. (Ratio observed are so far off the ratios expected) Genetic diagram A = Coloured allele. a = Colourless allele. Parents’ phenotype Coloured X Colourless (Kernel phenotype) Kernel genotype A A X aa Gametes A A X a a
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|dominance.| d.|a dihybrid cross.| e.|the mistakes made by Mendel.| ____ 4. The offspring of Mendel’s classic pea cross always looked like one of the two parental varieties because a.|one phenotype was completely dominant over another.| b.|each allele affected phenotypic expression.| c.|the traits blended together during fertilization.| d.|no genes interacted to produce the parental phenotype.| e.|different genes interacted to produce the parental phenotype.| ____ 5. What was the most significant
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mentioned in the footnote on p. 263‚ we have simplified the explanation in referring to the single pea plant as a parent. Technically‚ the gametophytes in the flower are the two “parents.”) Concept Check 14.2 1. For any gene with a dominant allele A and recessive allele a‚ what proportions of the offspring from an AA Aa cross are expected to be homozygous dominant‚ homozygous recessive‚ and heterozygous? 1. 1⁄2 homozygous dominant (AA)‚ 0 homozygous recessive (aa)‚ and 1⁄2 heterozygous
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Biology: Concepts and Connections‚ 6e (Campbell) Chapter 9 Patterns of Inheritance Multiple-Choice Questions 1) Which of the following statements regarding domestic dogs is false? A) Dogs originated in East Asia. B) Dogs of different breeds can be identified through genetic analysis. C) Shar-pei and Akita are genetically very similar to the wolf. D) All dogs are descended from wolves. E) Humans have bred dogs for thousands of years. Answer: D Topic: Opening Essay Skill:
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Name: ________________________ Class: ___________________ Date: __________ ID: A Genetics test questions Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Pea plants were particularly well suited for use in Mendel’s breeding experiments for all of the following reasons except that a. peas show easily observed variations in a number of characters‚ such as pea shape and flower color. b. it is possible to completely control matings
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relationship between the following pairs of genetic terms: A. Gene and trait: B. Gene and chromosome: C. Allele and gene: D. DNA sequence and amino acid sequence: Q3. For each of the following terms in the left column‚ choose the best matching phrase in the right column. a. phenotype 1. Having two identical alleles of a given gene b. alleles 2. The allele expressed in the phenotype of the heterozygote. c. independent assortment 3. Alternate forms of a gene.
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1. Explain what must happen in order for Greg and Susan to have a child with O type blood and nail-patella syndrome. Greg needs to pass down his chromosome 9 which carry the alleles‚ n and i. Susan also has the n and I alleles on chromosome 9. If both these alleles from both parents are passed down‚ it will create the allele Nnii which produced the blood type O and nail patella syndrome. 2. Determine all possible parental and recombinant gametes produced by Greg and Susan. Greg’s parental gametes
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carried the B allele‚ while those produced by the albino parent carried the b allele. The F1 offspring of such a cross would be Bb‚ and since black is dominant over albino‚ all the F1 animals would have had black fur. +1 point Second Cross: Since some of the F1 offspring are albino‚ that means that the black parent must have been heterozygous for fur color. So‚ the parents of the second cross were Bb x bb. The black parent would have produced gametes carrying either the B or the b allele‚ while the
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BIO 30 4TH EXAM REVIEWER Merlyn S. Mendioro Delayed and Extra-chromosomal Inheritance 1.) Genetic factors that are located outside the chromosome: plasmagenes‚ plasmons‚ cytogens‚ plasmids. 2.) Plasmid inheritance implies: perpetuation through DNA Replication. 3.) Killer gene particulate material in Paramecium aurelia: kappa 4.) Mirabilis jalapa shows extrachromosomal inheritance in the ___________. When a pale male parent is crossed with a green female the result usually is
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