Homework Answers
If both gene loci have homozygous recessive alleles and both of them produce identical
phenotypes, the F2 ratio 9 : 3 : 3 : 1 would become 9 : 7.
Both dominant alleles when present together, complement each other and are called complementary genes and produce a different phenotype, thus A_B_ will be purple.
homozygous recessive at either locus will result in white flowers.
A_B_ = 3/4 x 3/4 = 9/16 = purple flowers
aaB_ = 1/4 x 3/4 = 3/16 = white
A_bb = 3/4 x 1/4 = 3/16 = white 7/16 total white flowers
aabb = 1/4 x 1/4 = 1/16 = white.
Thus the production of 9 : 7 phenotypic ratio in sweet peas is because of complementary genes.
Add Answer to:
causing the death of an organem. Dr. Batesan and Dr. Punnet selected and cross-pollinated a breeding...
When Mendel crossed pure breeding peas having purple flowers with pure breeding peas having white flowers,...
When Mendel crossed pure breeding peas having purple flowers with pure breeding peas having white flowers, all of the offspring had white flowers. These results mean that white flower color is the: a.) genotype. b.) dominant phenotype. c.) recessive phenotype. d.) mode of inheritance.
CONTENT QUESTIONS (answer these for credit) 1. In an experiment to trace the inheritance of two...
CONTENT QUESTIONS (answer these for credit) 1. In an experiment to trace the inheritance of two traits in pea plants, a researcher decided to look at height, which is controlled by two alleles. The dominant allele T produces a tall plant while the recessive allele t produces a short plant. Flower color is controlled by one gene with two alleles as well. The dominant allele P produces purple flowers, and the recessive p produces white flowers. If the female parent...
For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall...
For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall plant is crossed with a short plant, what percentage of the offspring will be tall? , The two parents used in this cross are called as breeding parents. 6. Iftwo heterozygous tall plants from the above are crossed, what percentage of the offspring will be short? For questions 7, 8 and 9: Purple (R) is dominant to white (r) If two white flowered plants...
2. Hostas are a decorative leafy shade-loving plant. You take pollen from a true-breeding variety called...
2. Hostas are a decorative leafy shade-loving plant. You take pollen from a true-breeding variety called "Fire and Ice" with leaves that start white then develop green sectors, and purple flowers. The second strain (the female parent) is a true breeding variety called Earth Angel, which has green leaves with golden/yellow leaf centers, and white flowers. "Fire and Ice" "Earth Angel" The F1s all have the golden centered green leaves and pink flowers. Flower colors The F2s come out as...
2. Let's say that you are a breeder interested in developing a new variety of pea with purple flo...
2. Let's say that you are a breeder interested in developing a new variety of pea with purple flowers and you have decided to discard any plant that has white flowers. You cross two true-breeding parents together (one purple and one white) and you are debating whether to grow out the F population and visually select for purple flowers or to use a CAPS marker and select based on genotype. List 2 circumstances in which it would be better for...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with a pea plant that bred true for terminal flowers. All the F1 plants had axial flowers. Which is the recessive trait? Explain your answer. 2. Green pod color is a dominant allele in pea plants (G). If two plants with green pods are crossed, some of the offspring have yellow pods. What are the possible genotypes of the parents? 3. In garden peas, one...
You perform a trihybrid cross: You cross true-breeding purple-flowered, round, yellow peas (PPRRYY) with true-breeding white-flowered,...
You perform a trihybrid cross: You cross true-breeding purple-flowered, round, yellow peas (PPRRYY) with true-breeding white-flowered, wrinkled, green peas (pprryy). You then cross the resulting F1 offspring together to generate an F2 generation. What is the probability of an F2 plant having white flowers and producing round, yellow peas?
In Mendel's pea experiment A pure breeding parent with white flowers was crossed with a pure...
In Mendel's pea experiment A pure breeding parent with white flowers was crossed with a pure breeding purple flower parent. Which is true of the parents? Both are heterozygous one is heterozygous One is homozygous Both are dominant None of the above Question 2 1 pts In the same experiment which is true of the F1 generation O All are heterozygous all are homozygous all will be white color flower all are pure breeding none of the above Questions TPS...
Help Center 07 Question 38 What phenotypic ratio of offspring would result from a cross between...
Help Center 07 Question 38 What phenotypic ratio of offspring would result from a cross between a white-eyed male fruit fly, and a female that is heterozygous for red eye color? (See Chapter 8.3 Figure your e Text) 2 white-eyed females 2 red-eyed males V none of these 2 red-eyed female 1 white-eyed female: 1 red-eyed male: 2 white-eyed male 1 red-eyed female 1 white-eyed female 1 red-eyed male: 1 white-eyed male 2 red-eyed females: 2 white-eyed males Question 39...
2. A Pea plant that is Homozygous Dominant for purple flower color and Heterozygous for dark...
2. A Pea plant that is Homozygous Dominant for purple flower color and Heterozygous for dark green leaves is crossed with another pea plant that is Heterozygous for both purple flower color and dark green leaves Let R = Purple flower color and r = white flower color Let D = Dark Green leaves and d = light green leaves Data Collection/Selection Using the information above, write the parent genotypes and gametes. Not all blanks may be used. Parent Genotypes:...
CONTENT QUESTIONS (answer these for credit) 1. In an experiment to trace the inheritance of two traits in pea plants, a researcher decided to look at height, which is controlled by two alleles. The dominant allele T produces a tall plant while the recessive allele t produces a short plant. Flower color is controlled by one gene with two alleles as well. The dominant allele P produces purple flowers, and the recessive p produces white flowers. If the female parent...
For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall plant is crossed with a short plant, what percentage of the offspring will be tall? , The two parents used in this cross are called as breeding parents. 6. Iftwo heterozygous tall plants from the above are crossed, what percentage of the offspring will be short? For questions 7, 8 and 9: Purple (R) is dominant to white (r) If two white flowered plants...
2. Hostas are a decorative leafy shade-loving plant. You take pollen from a true-breeding variety called "Fire and Ice" with leaves that start white then develop green sectors, and purple flowers. The second strain (the female parent) is a true breeding variety called Earth Angel, which has green leaves with golden/yellow leaf centers, and white flowers. "Fire and Ice" "Earth Angel" The F1s all have the golden centered green leaves and pink flowers. Flower colors The F2s come out as...
2. Let's say that you are a breeder interested in developing a new variety of pea with purple flowers and you have decided to discard any plant that has white flowers. You cross two true-breeding parents together (one purple and one white) and you are debating whether to grow out the F population and visually select for purple flowers or to use a CAPS marker and select based on genotype. List 2 circumstances in which it would be better for...
In Mendel's pea experiment A pure breeding parent with white flowers was crossed with a pure breeding purple flower parent. Which is true of the parents? Both are heterozygous one is heterozygous One is homozygous Both are dominant None of the above Question 2 1 pts In the same experiment which is true of the F1 generation O All are heterozygous all are homozygous all will be white color flower all are pure breeding none of the above Questions TPS...
Help Center 07 Question 38 What phenotypic ratio of offspring would result from a cross between a white-eyed male fruit fly, and a female that is heterozygous for red eye color? (See Chapter 8.3 Figure your e Text) 2 white-eyed females 2 red-eyed males V none of these 2 red-eyed female 1 white-eyed female: 1 red-eyed male: 2 white-eyed male 1 red-eyed female 1 white-eyed female 1 red-eyed male: 1 white-eyed male 2 red-eyed females: 2 white-eyed males Question 39...
Most questions answered within 3 hours.
-
Fiscal policy is the deliberate manipulation of taxes and
government spending to alter GDP, employment, inflation...
asked 51 minutes ago -
evaluating an expression using only one digit and + and - as
operators ....3+5-1+7-5+8
-----------------------
stack...
asked 51 minutes ago -
Two concentric current loops lie in the same plane. The smaller
loop has a radius of...
asked 1 hour ago -
1)Which of the following is an
important difference between qualified and nonqualified retirement
plans?
a. Qualified...
asked 1 hour ago -
What's the streaming business's problem on the
horizon?
asked 2 hours ago -
I need help with writing the conclusion for this online lab
report
Abstract
By testing the...
asked 2 hours ago -
For the reaction 1N2+3H2-----> 2NH3, would the reaction rate
trend be: delta[NH3]/ delta t = -2...
asked 3 hours ago -
Within your current/past organization, identify a problem/issue
and format a design to address same. You may...
asked 2 hours ago -
A sock stuck to the side of a clothes-dryer barrel has a
centripetal acceleration of 24...
asked 4 hours ago -
A perfect gas undergoes an isentropic process such that its
volume doubles. If the ratio of...
asked 4 hours ago -
list the elements in groups 3A to 6A in the same order as in the
periodic...
asked 4 hours ago -
Estimating effect size. Peng and Chen (2014)
evaluated effect size estimates for various tests. In their...
asked 4 hours ago