If plant with red flowers is crossed with a plant with white flower produces an offspring with pink petals, which of the following is certain? a The parents must be homozygous dominant and homozygous recessive. b The color of petals is determined by genes with codominance. c The color of petals is determined by genes with complete dominance. d The color of petals is determined by genes with incomplete dominance. e None of these.

If plant with red flowers is crossed with a plant with white flower produces an offspring with pink petals, which of the following is certain? a The parents must be homozygous dominant and homozygous recessive. b The color of petals is determined by genes with codominance. c The color of petals is determined by genes with complete dominance. d The color of petals is determined by genes with incomplete dominance. e None of these.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 1ACQ: Figure 8.9 In pea plants, round peas (R) are dominant to wrinkled peas (r). You do a test cross...

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More Crosses with Pea Plants: The Principle of Independent Assortment Consider the following cross in pea plants, in which smooth pea shape is dominant to wrinkled, and yellow pea color is dominant to green. A plant with smooth yellow peas is crossed to a plant with wrinkled green peas. The offspring produced peas that were all smooth and yellow. What are the genotypes of the parents? What are the genotypes of the offspring?
Figure 8.9 In pea plants, round peas (R) are dominant to wrinkled peas (r). You do a test cross between a pea plant with wrinkled peas (genotype rr) and a plant of unknown genotype that has round peas. You end up with three plants, all which have round peas. From this data, can you tell if the parent plant is homozygous dominant or heterozygous?
Tallness (T) in a certain plant is dominant to short (t), while red (R) flower color is dominant to yellow (r). The heterozygous condition results in orange (Rr) flower color. A short plant with red flowers, is crossed with a plant homozygous for tallness and yellow flowers. What would be the genotype and phenotype of the F1 individuals? ttRr—short and orange ttrr—short and yellow TtRr—tall and red Ttrr—tall and yellow TtRr—tall and orange
In Japanese four o'clock plants red (R) color is incompletely dominant over white (r) flowers, and the heterogynous condition (Rr) results in plants with pink flowers. Construct a punnett square and give phenotypic and genotype ratios of the offspring for the following cross a red plant and a white plant
In a certain plant, the orange flower allele (Y) is dominant to the yellow flower allele (y). An allele that prevents flower color pigment formation (W) results in white flowers irrespectively of the Y and y alleles, and is dominant to an allele (w) that allows flower color formation. What is the expected proportion of phenotypes in the offspring of a cross between plants with the following genotypes? yyWw X YyWw
Do a punnet square to find the possible genotypes and phenotypes of the F1 generation when a plant that is homozygous recessive for pod color and heterozygous for pea shape is crossed with a plant that is heterozygous for pod color and homozygous dominant for pea shape. Dominant for pod color = G (green) Recessive for pod color = g (yellow) Dominant for pea shape = R (round) Recessive for pea shape = r (wrinkled) P1: GG X Rr Gg X RR
Homozygous purple flowers have the genotype WW, and W is a dominant allele. A pea plant with unknown genotype and purple flowers is test crossed with a homozygous recessive white-flowered plant (genotype ww), and one-half of the resulting progeny have purple flowers, while the other half have white flowers. What is the genotype of the test-crossed parent? do not copy from others
in a certain plant, when individuals with blue flowers are crossed with individuals with blue flowers, only blue flowers are produced. plants with red flowers crossed with plants with red flowers sometimes produce only red flowers, although other times they produce either red or blue flowers. when plants with red flowers are crossed with plants with blue flowers, sometimes only red flowers are produced; other times either red or blue flowers are produced. which of the following is true? Red is incompletely dominant Red is recessive Red is dominant Red is codominant Blue is dominant
In a certain plant, the orange flower allele (Y) is dominant to the yellow flower allele (y). An allele that prevents flower color pigment formation (W) results in white flowers irrespectively of the Y and y alleles, and is dominant to an allele (w) that allows flower color formation. What is the expected proportion of phenotypes in the offspring of a cross between plants with the following genotypes? yyWw X Yyww 9/16 white flowers, 3/16 orange flowers, 4/16 yellow flowers 1/3 white flowers, 1/3 orange flowers, 1/3 yellow flowers 12/16 white flowers, 3/16 orange flowers, 1/16 yellow flowers 6/8 white flowers, 1/8 orange flowers, 1/8 yellow flowers 1/2 white flowers, 1/4 orange flowers, 1/4 yellow flowers
Two genes determine flower color and leaf shape. However, these genes do not exhibit complete dominance. Flower color is purple (EE), purple&yellow (Ee), or yellow(ee). Leaf shape is chordate (DD), lobed (Dd), or oval (dd). a. Flower color exhibits what type of dominance ____________________________ and List the phenotype(s) seen in their offspring. Yellow, lobed plants are crossed to purple& yellow, lobed plants.
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a	The parents must be homozygous dominant and homozygous recessive.
b	The color of petals is determined by genes with codominance.
c	The color of petals is determined by genes with complete dominance.
d	The color of petals is determined by genes with incomplete dominance.
e	None of these.