P generation х Purple flowers, long pollen (PPLL) Red flowers, round pollen (ppll) F, generation Purple flowers, long pollen (PpLI) Self-fertilization Observed Expected number F2 generation number Ratio Ratio Purple flowers, long pollen Purple flowers, round pollen Red flowers, long pollen Red flowers, round pollen 296 15.6 240 19 1.0 80 27 1.4 80 85 4.5 27 An experiment of Bateson and Punnett with sweet peas, showing that independent assortment does not always occur. Note: The expected numbers are rounded to the nearest whole number.

P generation х Purple flowers, long pollen (PPLL) Red flowers, round pollen (ppll) F, generation Purple flowers, long pollen (PpLI) Self-fertilization Observed Expected number F2 generation number Ratio Ratio Purple flowers, long pollen Purple flowers, round pollen Red flowers, long pollen Red flowers, round pollen 296 15.6 240 19 1.0 80 27 1.4 80 85 4.5 27 An experiment of Bateson and Punnett with sweet peas, showing that independent assortment does not always occur. Note: The expected numbers are rounded to the nearest whole number.

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter29: Life Cycles Of Flowering Plants

Section: Chapter Questions

Problem 7SQ: Choose the statement that is true. a. All flowers are pollinated by bees. b. Apple trees are...

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A snapdragon with pink petals, black anthers, and longstems was allowed to self-fertilize. From the resultingseeds, 650 adult plants were obtained. The phenotypesof these offspring are listed here.78 red long tan26 red short tan44 red long black15 red short black39 pink long tan13 pink short tan204 pink long black68 pink short black5 white long tan2 white short tan117 white long black39 white short blacka. Using P for one allele and p for the other, indicatehow flower color is inherited.b. What numbers of red : pink : white would havebeen expected among these 650 plants?c. How are anther color and stem length inherited?d. What was the genotype of the original plant?e. Do any of the three genes show independentassortment?f. For any genes that are linked, indicate the arrangements of the alleles on the homologous chromosomes in the original snapdragon, and estimate thedistance between the genes
A. What is double fertilization? B. What are the products of double fertilization? C. Explain the following quote “As an individual, the endosperm is unique as it has three ancestors and never leaves any descendants.” What are the three ancestors referred to in this quote? And why endosperm does not leave any descendants?
A Heterozygous plant, GgHhliJjKk is allowed to self-fertilize. What is the probability that an offspring will be GgHHliJjKk?
corn id purple smooth Purple wrinkled yellow smooth yellow wrinkled W20-AB1-D-13 486 152 162 54 W21-BB1-A-19 445 152 154 94 W20-BB1-D-19 501 153 167 88 W20-AB1-C-16 489 153 94 56 W20-BB1-H-11 480 153 94 56 DIHYBRID CROSS1. ) Consider the possibility that your observational data are of plantsresulting from a dihybrid cross, where the previous generation were heterozygousfor both traits (RrSs x RrSs). Create a Punnett square for this cross and presentthe expected phenotypic ratio.2.) Present your results in a table as dihybrids and determine the observedphenotypic ratio of purple/smooth to purple/shrunken to yellow/smooth toyellow/shrunken. Consider the plant as a whole rather than the individual cobs.
DRAW IT Pea plants heterozygousfor flower position and stem length(AaTt) are allowed to self-pollinate,and 400 of the resulting seeds areplanted. Draw a Punnett square forthis cross. How many offspring wouldbe predicted to have terminal flowers and be dwarf? (See Table 14.1.)
A scientist pollinates a true-breeding pea plant with violet, terminal flowers with pollen from a true-breeding pea plant with white, axial flowers. Which of the following observations would most accurately describe the F2 generation? a. 75% violet flowers; 75% terminal flowers b. 75% white flowers in a terminal position c. 75% violet flowers; 75% axial flowers d. 75% violet flowers in an axial position
F2 Cross: Tall, White, Axial x Dwarf, Violet, Terminal DdwwAA x ddWWaa Character: Stem height, Flower color & position Use fork-line method to check the possible offspring. Show and interpret all the possible genotypes and phenotypes of the offsprings.
Double fertilization is a) fertilization of an egg by two sperm. b) fertilization of two eggs by the same sperm. C) fertilization of two eggs in the same flower. d) fertilization of an egg by one sperm and an endosperm-forming cell by another sperm. e) fertilization of an egg and an endosperm-forming cell by the same sperm.
What would you predict about the color of the F1 plants’ ﬂowers?
Based on this Punnett square assume that half of the plant's sperms and eggs are p and half are P, one can predict that the chance p meeting P at fertilizating is ___. A. 1/2 x 1/4 B. 75% C. 50% D. 25% E. 100%
Using the illustration and the assumption that half of a plant's sperm and eggs are p and half are P, one can predict that the chance of sperm p meeting egg P at fertilization is ____. 25% 75% 1/2 x 1/4 50% 100%
What is a feasible explanation why there is lesser percentage of germination and growth rate in monggo seeds when sprinkled with water added with 3/4 teaspoon as compared to monggo seed set-ups sprinkled with water?