BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 13, Problem 6GP
In sweet pea plant, an allele for purple flowers
296 purple flowers/long pollen grains
19 purple flowers/round pollen grains
27 red flowers/long pollen grains
85 red flowers/round pollen grains
What is the best explanation for these results?
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In sweet pea plant, an allele for purple flowers(P) is dominant when paired with a recessive allele for red flowers (p). An allele for long pollen grains (L) is dominant when paired with a recessive allele for round pollen grain (l). Bateson and Punnett crossed a plant having purple flowers/long pollen grains with one having white/flowers/round pollen grains. All F1 offspring had purple flowers and long pollen grains. Among the F2 generation, the researchers observed the following phenotypes:296 purple flowers/long pollen grains19 purple flowers/round pollen grains27 red flowers/long pollen grains85 red flowers/round pollen grainsWhat is the best explanation for these results?
In sweet pea plants, an allele for purple flowers (P) isdominant when paired with a recessive allele for redflowers (p). An allele for long pollen grains (L) is dominant when paired with a recessive allele for roundpollen grains (l). Bateson and Punnett crossed a planthaving purple flowers and long pollen grains withone having white flowers and round pollen grains.All F1 offspring have purple flowers and long pollen grains. Among the F2 generation, the researchers observed the following phenotypes:296 purple flowers/long pollen grains 19 purple flowers/round pollen grains 27 red flowers/long pollen grains 85 red flowers/round pollen grainsWhat is the best explanation for these results?
You have a purple-flowered pea plant, but you do not know if it is homozygous (PP) or heterozygous (Pp) for flower color
because both genotypes result in the same purple phenotype. Purple color allel (P) is dominant over white flower allel (p).
What would you do to determine the genotype of flower color of this plant?
Lötfen birini seçin:
O a.
Crossing the plant with homozygous large flowered pea plant (LL)
Ob.
Crossing the plant with heterozygous purple flowered pea plant (Pp)
Crossing the plant with homozygous dominant purple flowered pea plant (PP)
d.
Crossing the plant with a plant whose genotype is unknown
e.
Crossing the plant with homozygous recessive white flowered pea plant (pp)
Chapter 13 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 13 - A heterozygous individual has _______ for a trait...Ch. 13 - An organisms observable traits constitute its...Ch. 13 - In genetics, F stands for filial, which means...Ch. 13 - The offspring of the cross AAaa are ________. a....Ch. 13 - The second-generation offspring of a cross between...Ch. 13 - Refer to question 4. Assuming complete dominance,...Ch. 13 - Independent assortment means _______. a. alleles...Ch. 13 - A testcross is a way to determine _________. a....Ch. 13 - Assuming complete dominance, crosses between two...Ch. 13 - The probability of a crossover occurring between...
Ch. 13 - True or false? All traits are inherited in a...Ch. 13 - One gene that affects three traits is an example...Ch. 13 - ________ in a trait is indicated by a bell curve.Ch. 13 - The phenotype of individuals heterozygous for...Ch. 13 - Match the terms with the best description. ___...Ch. 13 - Mendel crossed a true-breeding pea plant with...Ch. 13 - Assuming that independent assortment occurs during...Ch. 13 - Determine the predicted genotype frequencies among...Ch. 13 - Prob. 4GPCh. 13 - A single allele gives rise to the HbS form of...Ch. 13 - In sweet pea plant, an allele for purple flowers...
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