Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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how the cross between a heterozygous purple flowered pea plant and a white pea plant.
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What is the genotypic ratio of the above cross?
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0:4:0
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0:2:2
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2:2:0
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1:2:1
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2:1:1
What is the
phenotypic ratio of the above cross?-
2:2
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4:0
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0:4
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0:4:0
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0:2:2
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- Part 3: Use homologous chromosomes marked with alleles “A” and “a” and a second pair of homologs marked with alleles “B” and “b”. to demonstrate Mendel’s Principle of Independent Assortment in cells in Meiosis. Indicate what phase this happens in meiosis. Part 4: Use AaBb x AaBb and two Punnett squares to demonstrate Mendel’s Principle of Independent Assortment. Write the expected phenotypic ratios under each Punnett square. Now, multiply the probabilities of each event to get combined probabilities for BOTH genes. i.e. the chance of being homozygous recessive for both genes is 1/4 x 1/4 =1/16.arrow_forwardMendelian Genetics Worksheet Name Hour Fill in the Punnett squares for each cross given to determine the phenotype and genotype ratio's of the offspring Crosses with one homozygous dominant parent: AA x AA A AA x Aa A АА х а A AA x aa A A A A A a A a a Offspring Genotypes: AA AA AA Aa Offspring Phenotypes: Aa Aa aa aa aa Dominant Dominant Recessive Dominant Recessive Recessive_ _ Crosses with one heterozygous parent: Aа х АА Аа х Аа Аа х аа A a A a A a A a A a a Offspring Genotypes: AA_ Aa_ aa AA Aa aa AA_ Aa aa Offspring Phenotypes: Dominant Recessive Dominant Dominant Recessive Recessive _ Crosses with one homozygous recessive parent: aa x AA aa x Aa аа х аа a a a a a a A A a A a a Offspring Genotypes: AA Aa_aa AALAA_aa AA Aa_ aa_ Offspring Phenotypes: Dominant Dominant Dominant Recessive_ Recessive_ Recessive _arrow_forwardMENDEL CROSSED TRUE BREEDING PEA PLANTS. ONE PARENT HAD ROUND, GREEN SEEDS, AND THE OTHER HAD WRINKLED, YELLOW SEED. ALL F₁ PLANTS HAD SEEDS THAT WERE ROUND AND YELLOW. PREDICT THE RESULTS OF F₂ PLANTS, USING A PUNNET SQUARE OR TREE DIAGRAM. 1 2 WHAT ARE THE RESULTS AS A RATIO? WHAT ARE THE RESULTS AS FRACTIONS?arrow_forward
- What cross will result in a ratio of 3 dominant phenotype offspring for every 1 recessive offspring? What cross will result in a 1:2:1 genotype ratio in the offspring? What cross will result in all homozygous recessive offspring?arrow_forwardA yellow lab who is heterozygous for TYRP1 produces a litter of puppies with a brown lab who is heterozygous for MC1R. What is the probability of a black puppy resulting from this cross? Remember that both dogs have both genesarrow_forwardIn a dihybrid cross for which the parental cross is A/A;B/Bx a/a;b/b, what proportion of F2 offspring will be heterozygous for both genes? Assume independent assortment. 1/2 1/4 3/4 All are heterozygotes. None are heterozygotes.arrow_forward
- Please Aspaarrow_forwardPigeons display a high color variety, here we try to understand the genetic basis of mixed red & black stippling of the feathers (kitey) and their genetic relation to black and red feather color. We conducted the following crosses: Cross Offspring kitey x kitey 16 kitey 5 black 3 red kitey x black 6 kitey 7 black red x kitey 18 red 9 kitey 6 black Have a look at the cross results and develop a hypothesis to explain the inheritance of kitey, black and red feather color in pigeons (Hint: assume that 2 loci are involved and some type of epistasis occurs) QUESTION: 1. provide hypothesis 2. provide the hypothetical genotypes for each crossingarrow_forwardFigure 8.16 What ratio of offspring would result from a cross between a white-eyed male and a female that is heterozygous for red eye color?arrow_forward
- In a monohybrid cross and simple dominance, what is the probability of the dominant phenotype being expressed in the offspring? ½ 1:2:1 34 14 1:3:1arrow_forwardGive typing answer with explanation and conclusion Directions: For the following problem, calculate the probability of the offspring between the cross using the sum and product rule. The parent generation has genotypes of Aa Bb Cc and AA Bb CC. What is the probability the F1 generation would be AA bb cc?arrow_forward
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