Question
In: Biology
1. Two homozygous strains of white-flowered bluebonnets are mated, the F1 offspring all have white flowers....
1. Two homozygous strains of white-flowered bluebonnets are mated, the F1 offspring all have white flowers. The F1 plants are crossed to each other, 126 white-flowered and 33 blue-flowered plants were produced. Which of the following best describes the genotype of a homozygous blue-flowered plant?
|
A/A; B/B |
||
|
A/A; b/b |
||
|
a/a; b/b |
||
|
A/A; b/b or a/a; b/b |
||
|
there are not enough data to tell |
2. From the F2 offspring in Question1, you cross two white flowered plants to each other. Half of their offspring have white flowers and half have blue flowers. What are the genotypes of the two white-flowered F2 plants?
|
A/A; B/B and a/a; b/b |
||
|
A/A; b/b and a/a; B/b |
||
|
a/a; b/b and A/A; B/b |
||
|
A/A; b/b and A/a; b/b |
||
|
there are not enough data to tell |
Solutions
gladiator answered 1 year agoRelated Solutions
Two pea plants are crossed. One is homozygous for white flowers and the other is heterozygous...
Two pea plants are crossed. One is homozygous for white flowers
and the other is heterozygous for purple flowers. Both are
heterozygous for being tall plants. In pea plants, tall is dominant
to short, and purple flowers are dominant to white.
Fill out the table below for the probability of each possible
phenotype. Report probability as a decimal rounded to four places
(e.g. 0.1250, not 1/8 or 12.5%).
Phenotype
Probability
tall purple
__________
short purple
__________
tall white
__________
short...
Two pea plants are crossed. One is homozygous for white flowers and the other is heterozygous...
Two pea plants are crossed. One is homozygous for white flowers
and the other is heterozygous for purple flowers. Both are
heterozygous for being tall plants. In pea plants, tall is dominant
to short, and purple flowers are dominant to white.
Fill out the table below for the probability of each possible
phenotype. Report probability as a decimal rounded to four places
(e.g. 0.1250, not 1/8 or 12.5%).
Phenotype
Probability
tall purple
short purple
tall white
short white
In a...
Individuals from two separate true-breeding strains of white deer mice are crossed yielding all grey offspring....
Individuals from two separate true-breeding strains of white
deer mice are crossed yielding all grey offspring. White is
recessive to gray color based on crossing mice from each strain
with a grey mouse. Which of the following would best explain this
result?
a. lethal alleles
b. multiple alleles
c. epistasis
d. complementation
e. incomplete dominance
22. Mendel crossed true-breeding purple-flowered plants with true-breeding white-flowered plants, and none of the resulting offspring...
22. Mendel crossed true-breeding purple-flowered plants with
true-breeding white-flowered plants, and none of the resulting
offspring produced purple flowers. The allele for purple flowers is
____________.
a. dominant
b. monohybrid
c. independent
d. recessive
e. segregated
23. An individual with (naturally) curly hair and an individual
with (naturally) straight hair mate; all of their offspring have
(naturally) wavy hair. If an individual with wavy hair mates with
another individual with wavy hair, what is the probability that
their child will...
In a breeding experiment, chicken with white feathers, small comb were mated and the 192 offspring...
In a breeding
experiment, chicken with white feathers, small comb were mated and
the 192
offspring
belonged
to four
categories are
(i)
white
feathers, small comb (WS) – 100
offspring,
(ii)
white
feathers, large comb (WL) – 32
offspring,
(iii)
dark feathers,
small comb and (DS) – 40
offspring,
(iv)
dark
feathers,
large comb (DL) – 20
offspring.
Use an
appropriate test to check if the
offspring
categories
follow the expected ratio 9:3:3:1
(level of
significance = 0.05).
Two purple sea slugs are mated with each other. Among their numerous offspring, 428 have a...
Two purple sea slugs are mated with each other. Among their
numerous offspring, 428 have a purple integument and 152 have
orange integuments. With a chi-square test, compare the observed
numbers with a 3:1 ratio and determine if the difference between
observed and expected could be a result of chance.
Two pink-flowered azaleas are crossed. The cross produces are 25 pink, 13 white, and 10 lavender-flowered...
Two pink-flowered azaleas are crossed. The cross
produces are 25 pink, 13 white, and 10 lavender-flowered plants.
The color trait could be monogenic with incomplete dominance
(1:2:1) or digenic with epistasis (9:4:3).
What statistical test could you perform to test this
hypothesis?
Does this test actually allow you to distinguish
between these hypotheses? Explain and show your calculations. Note:
A p-value of 0.05 equals 5.99 equals for two degrees of
freedom.
1)A homozygous tomato plant with red fruit and yellow flowers was crossed with a homozygous tomato...
1)A homozygous tomato plant with red fruit and yellow flowers
was crossed with a homozygous tomato plant with golden fruit and
white flowers. The F1 all had red fruit and yellow
flowers. The F1 were testcrossed by crossing them to
homozygous recessive individuals, and the following offspring were
obtained:
Red fruit and yellow flowers41
Red fruit and white flowers7
Golden fruit and yellow flowers8
Golden fruit and white flowers44
How many map units separate these genes?
A)17.6
B)17.1
C)15
D)18.1...
Wild harebells have blue flowers. Two strains of harebells carry recessive alleles that give the plants...
Wild harebells have blue flowers. Two strains of harebells carry
recessive alleles that give the plants white flowers.
a. Describe a cross to determine whether the white-flower
causing alleles in these two strains are variants of the same gene
or different genes, and the progeny phenotypes you expect to find
in each case.
b. You results from the cross above indicate that the two
strains carry alleles at different genes. What phenotypic ratio do
you expect to find among the...
5. Now cross two of the heterozygous F1 offspring from question #2. Parent #1 Parent #2...
5. Now cross two of the heterozygous F1 offspring from question
#2.
Parent #1
Parent #2
Y
y
Y
YY
Yy
y
Yy
yy
What is the genotypic ratio of the offspring in Question 5?
25%(YY):50%Yy:25%(yy)
What is the phenotypic ratio of the offspring in Question 5?
3(Yellow):1(Green)
6. Consider the resulting ratio of crossing the two heterozygous
pea plants in question #5. We will use this ratio in a short
activity exploring probability. Keep in mind that crossing two...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Describe the benefits of the private-equity ownership model versus public ownership and family-ownership.
- 1. Real heat engines, like the gasoline engine in a car, always have some friction between...
- Please cite your use of a source Which do you think arose first, in evolution: the...
- 14. If the photon is travelling towards earth, from a region with lower gravitation, the shift...
- I need to combine two programs that can do the following (a) what ls command does...
- What are five things you can do before an earthquake, and five things after an earthquake...
- 111 m3/min of hydrogen measured at normal conditions and nitrogen at a 300% excess enter an...
ADVERTISEMENT