Genetics Module 1 Connect Quiz
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Northeastern University *
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2301
Subject
Biology
Date
Dec 6, 2023
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1.
Award: 10 out of 10.00 points
Score:
200/200
Points
100
%
What is the difference between cross- and self-fertilization?
In self-fertilization, the pollen from one plant is used to fertilize the egg from another plant.
In cross-fertilization, the pollen from one plant is used to fertilize the egg of another plant.
In cross-fertilization, insects are used to pollinate the plants, whereas in self-fertilization, the
investigator pollinates the plants.
In cross-fertilization, the pollen from one plant is used to fertilize the egg from the same plant.
References
Multiple Choice
Learning Objective:
01.01.02 Describe
how Mendel cross-
fertilized and self-
fertilized pea plants.
Section: 1.01
✓
2.
Award: 10 out of 10.00 points
What is the outcome of crossing two pure-breeding plants with antagonistic characters of traits?
Only one characteristic will be seen, and it will be that of the female.
Both characteristics will be seen in the progeny.
Both characteristics will be seen in the progeny in a 3:1 ratio.
Only one of the characteristics will be seen in the progeny.
References
Multiple Choice
Learning Objective:
01.01.04 Predict the
type of progeny
produced by
Mendel's crosses
between pure-
breeding plants with
discrete, antagonistic
traits, such as purple
versus white flowers.
Section: 1.01
✓
3.
Award: 10 out of 10.00 points
What does the pattern of inheritance in this pedigree indicate about the rare disease allele?
There is no indication that the disease allele is either dominant or recessive.
The disease allele is not inherited but arises only by a new mutation in affected individuals.
The disease allele is dominant.
The disease allele is recessive.
References
Multiple Choice
Learning Objective:
01.03.01 Analyze
human pedigrees to
determine whether a
genetic disease
exhibits recessive or
dominant inheritance.
Section: 1.03
✓
4.
Award: 10 out of 10.00 points
Suppose that in plants, smooth seeds (
S
) is dominant to wrinkled seeds (
s
), and tall plants (
T
) is
dominant to short plants (
t
). An F
1
plant from a mating between homozygous plants that were
tall/smooth and short/wrinkled was crossed to the short/wrinkled parent. What proportion of the
progeny are expected (according to the Mendel’s law of independent assortment) to be homozygous
for short and wrinkled alleles?
1/4
1/16
0
1/2
1/8
References
Multiple Choice
Learning Objective:
01.02.03 Explain
Mendel's law of
independent
assortment and how
the 9:3:3:1
phenotypic ratio
among the F2 of a
dihybrid cross
provides evidence
for this law.
Section: 1.02
✓
5.
Award: 10 out of 10.00 points
Starting with the parental cross AA
× aa
, what proportion of the F
2
offspring is expected to be
homozygous?
None are homozygotes.
1/4
3/4
All are homozygotes.
1/2
References
Multiple Choice
Learning Objective:
01.02.01 Explain
Mendel's law of
segregation and how
it predicts the 3:1
dominant-to-
recessive phenotypic
ratio among the F2
generation of a
monohybrid cross.
Section: 1.02
✓
6.
Award: 10 out of 10.00 points
Assume that in guinea pigs, dark brown fur (
B
) is dominant to black fur (
b
). If you mate a homozygous
black guinea pig with a heterozygous brown guinea pig, what proportion of the progeny will be black?
1/4
1/2
3/4
All of these choices are correct.
None of these choices are correct.
References
Multiple Choice
Learning Objective:
01.02.02 Distinguish
between a
monohybrid cross
and a testcross.
Section: 1.02
✓
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Related Questions
TOPIC: GENE INTERACTION AND EPISTASIS
Two pure-breeding (homozygous) lines of shrubs were crossed as follows:
P1 phenotype red leaves X green leaves
P1 genotype ___________ _____________
F1 phenotype 100% green leaves with white flecks
F1 genotype ___________
Crossing the F1s produced:
F2 phenotypes F2 genotypes
123 green leaves w/ white flecks ____
44 green leaves ____
63 red leaves ____
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Instruction: Observe the process used in plant and animal reproduction.
A. Put a Check (/) if the process helps to produce offspring with genetic variation,
then put a cross (x) if it produces offspring with no genetic variation.
Process
Genetic Variation in Offspring
1. Self pollination of a flower
2. Plant Cutting
3. Germination of seeds
4. Stolons producing new plants
arrow_forward
->
BOOKMARK
NEXT
Question 24/28
Using Chart 2 of the Pea Plant Punnett Squares, what
are the chances of producing an offspring having a
rough texture/shape and being green in color?
24
Use the diagrams below to answer the questions that follow.
Pea Plants
Chart 1
Punnett Square
3
Aa
A a
Aa
Aa
Chart 2
AaBb x AaBb
AB
Ab
qe
AaBb
aB
Key
AA - Green
AB AABB AABB | AaBB
Ab AABB AAbb AaBb
BB- Smooth
Aabb
aB AaBB
ab AaBb Aabb
aa - Yellow
AaBb
aaBB
aaBb
bb - Rough
aaBb
aabb
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Topic: Genetic analysis
(don't answer if you already answered it thank you)
arrow_forward
Answer in 75-100 words
“What is the advantage of internal fertilization overexternal fertilization and vice versa”?
arrow_forward
II III 51
6.
Section 5: Trihybrid cross and Laws of probability
For a trihybrid cross, in which inheritance of alleles for three genes is tracked; drawing a
Punnett square that combines all three genes may not be practical. Instead the laws of
probability may be used. The product law of probabilities says that when alleles for separate
genes segregate independently, we can figure out the probability of a particular combined
genotype by multiplying the probability of the alleles for each gene.
13. We cross a homozygous tall pea plant with yellow, round seeds to a homozygous dwarf
pea plant with green, wrinkled seeds. All the F1 offspring are all tall plants with yellow,
round seeds.
a. What are the expected F2 ratios (use fractions) of tall and dwarf plants?
b. What are the expected'F2 ratios (use fractions) of yellow and green seeds?
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700 peak 1
00
600
500
400
300
200
100
0
Peak 6
Stripes
Time Remaining
Peak 7
Peak 5
Spur Length
Petal Tips
☐
lab notebook
Peak 4
-Anthers
Stigmas
Blade Color
- Spur Color
Petal Color
In the figure, what phenotype changes distinguish flowers on Peak 2 from flowers on Peak 7?
Petal color only.
Spur color and Petal color.
Anthers, Stigmas, and Blade color.
Spur length and Petal tips.
Spur color only.
Peak 2
Return
Peak 3
Submi
arrow_forward
Do the punnett square and explain
arrow_forward
TOPIC: GENE INTERACTION AND EPISTASIS
In pineapples, leaves may be spiny, spiny-tipped or piping. Pineapples of different phenotypes were used in the following crosses:
P1 phenotype piping X spiny
P1 genotype ______ ______
F1 phenotype 100% piping
F1 genotype ______
Crossing the F1s produced:
F2 phenotypes F2 genotypes
95 piping _______
25 spiny tipped _______
8 spiny _______
arrow_forward
TOPIC: Variations in Gene Expression
In a cross involving polygenic inheritance, three (3) gene pairs control plant height. The shortest and tallest plants are 12 cm and 24 cm, respectively. What height should all F1s display if the shortest and tallest plants were crossed, assuming environmental factors are the same
arrow_forward
Problem: A homozygous tall, homozygous white flower plant crosses with a homozygous short, homozygous purple flower plant. We know that the purple and tall flowers are the dominant traits. Show your work.
What are the phenotypes of the offspring?
arrow_forward
Mendel's Traits and Symbols for Pea Plants
Symbol
Symbol
Traits
Seed Shape
Seed Color
Seed Coat Color
Pod Shape
Dominant Allele
Recessive Allele
Round
Yellow
Colored
Smooth
Wrinkled
Green
White
Constricted
Yellow
Pod Color
Green
Stem Height
Tall
Short
Terminal
Flower Position
Axial
A
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9/assessments/424097/variants/623602/take/6/
dity Test
4 Points
SKETCHPAD
Question 7
Use the Punnett square in the sketch pad below to cross two heterozygous tall plants to
determine the possible offspring.
Let R tall and r = short.
Rr
Rr
C«»
0:00/0:12
Tall X Tall
(Mating)
Speed: 1x
A Q
Paused
arrow_forward
Instructions: Answer the following problem using the punett square and identify its Genotypic ratio and
Phenotypic ratio.
1. A homozygous round-seeded plant (RR) is crossed with a
homozygous wrinkle-seeded plant (rr). What is the phenotypic
and genotypic ratio of their offspring?
Genotypic Ratio
Phenotypic Ratio-
2. A heterozygous green-colored pod (Gg) is crossed
with a yellow-colored pod (gg). Predict the
Genotypic and Phenotypic ratio of their offspring.
Genotypic Ration
Phenotypic Ration
arrow_forward
I. Perform the indicated single-gene and two-gene crosses. Show all work. Show all Punnett squares. List the gene or genes involved, list and define all allele symbols, and indicate the genotypes of the individuals you are crossing above the Punnett square. Answer questions that ask for a ratio as a ratio and questions that ask for a percent as a percent.
In snapdragon plants, the alleles for flower color show incomplete dominance. First show a cross of two parents, one with red flowers and the other with white flowers. Then show a cross of two of the F1 plants to get the F2 generation. Indicate the genotype ratio and phenotype ratio for both the F1 and F2 generations.
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Need help please
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Please show proper computation and explanation for me to understand it better. Thank youuuuu
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Can you show me the cross and how to get the answers
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Please answer quickly
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6help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
arrow_forward
Topic: Trihybrid Cross,
Height in merigonias is determined by three unlinked genes that act additively. Each has two alleles, one compltely dominant allele(A,B or C) that makes plants taller and one recessive allele that makes plants shorter. Do the corss AaBbCc X AaBbCc. The F1 progenty: 27/64 will be as tall as the parents; 37/64 will be shorter than the parents. Pls explain it with more details. thanks
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Answer 8 please
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Remaining Time: 35 minutes, 05 seconds.
* Question Completion Status:
A Moving to another question will save this response.
Question 14
1
Which of the following would be a plant GENOTYPE
O The plant has two copies of the same allele for flower color (BB)
O The plant has a blue flower
O The plant is resistant to fungal disease
O The plant is 30cm tall
L
A Moving to another question will save this response.
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Name
Period
into the genetics problem.
Genetics Worksheet # 2
1. In pea plants, smooth peas (S) are dominant to wrinkled peas (s). Work the following crosses.
a. homozygous dominant x recessive
Genotypes:
Phenotypes:
Genotypic ratio:
Phenotypic ratio:
b. heterozygous x heterozygous
Genotypes:
Phenotypes:
Genotypic ratio:
Phenotypic ratio:
2, A man and his wife are both heterozygous for brown eyes (B). They have six children all of
whom have blue eyes> How can this happen?
List the genotypes of the parents and the children. Show the Punnett square.
Parents:
Kids:
What is the chance that the next child will have blue eyes?
arrow_forward
Practice with Crosses.
5. A TT (tall) plant is crossed with a tt (short plant).
What percentage of the offspring will be tall?
6. A Tt plant is crossed with a Tt plant. What percentage
of the offspring will be short?
What percentage is tall?
7. A heterozygous round seeded plant (Rr) is crossed with a
homozygous round seeded plant (RR).
What percentage of the offspring will be homozygous (RR)?
8. A homozygous round seeded plant is crossed with a homozygous
wrinkled seeded plant. What are the genotypes of the parents?
What percentage of the offspring will also be homozygous?
I also
What is the genotype of all of the offspring?
9. In pea plants purple flowers are dominant to white flowers.
If two white flowered plants are cross, what percentage of their
offspring will be white flowered?
10. A white flowered plant is crossed with a plant that is
heterozygous for the trait. What percentage of the
offspring will have puple flowens?
11. Two plants, both heterozygous for the gene that controls…
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Practice 3, no points.
A variety of pea plant known as Blue Pamlico produces a tall plant with blue seeds. A second variety of pea plant called Mulberry Dwarf produces a short plant with white seed. The two varieties are crossed and the seeds are collected. All the seeds are white. When planted, the seeds all produce tall plants. These tall plants are allowed to self-fertilize. For the F2 generation, 94 plants had blue seeds and were tall, 272 plants had white seeds and were tall, 31 plants had blue seeds and were short, and 89 plants had white seeds and were short.
a)Which phenotypes are dominant and why?
b)What would be the expected distribution of phenotypes in the F2 generation if the alleles of the genes assort independently?
c)Perform chi square analysis on the distribution of phenotypes in the F2 generation
d) Are these results consistent with the hypothesis of independent assortment? Explain using the results of your chi squared analysis.
arrow_forward
A BOOKMARK
> NEXT
Question 23/28
E.
According to the probability of the pea plant offspring
in chart 2, what percentage of the offspring will be
yellow in color?
23
Use the diagrams below to answer the questions that follow.
Pea Plants
Chart 1
Punnett Square
B
Aa
D 25%
A a
E 75%
Aa
Aa
Chart 2
AaBb x AaBb
AB
Ab
aB
ab
Key
AB AABB AABB AABB
Ab AABB AAbb AaBb
AA - Green
AaBb
BB- Smooth
Aabb
aB AABB
AaBb
aaBB
aaBb
a-Yellow
bb - Rough
AaBb
qe
Aabb
aaBb
aabb
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a. What type of trait is this? How many genes and alleles are involved? Explain your answer.
b. What are the genotypes of the 90 and 100 cm plants respectively in the parental generation?
c. What is the possible genotype, or genotypes, of the 95 cm class in the F2?
c. What is the possible genotype, or genotypes, of the 95 cm class in the F2?
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please do all the questions and thank u for your help
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Related Questions
- TOPIC: GENE INTERACTION AND EPISTASIS Two pure-breeding (homozygous) lines of shrubs were crossed as follows: P1 phenotype red leaves X green leaves P1 genotype ___________ _____________ F1 phenotype 100% green leaves with white flecks F1 genotype ___________ Crossing the F1s produced: F2 phenotypes F2 genotypes 123 green leaves w/ white flecks ____ 44 green leaves ____ 63 red leaves ____arrow_forwardInstruction: Observe the process used in plant and animal reproduction. A. Put a Check (/) if the process helps to produce offspring with genetic variation, then put a cross (x) if it produces offspring with no genetic variation. Process Genetic Variation in Offspring 1. Self pollination of a flower 2. Plant Cutting 3. Germination of seeds 4. Stolons producing new plantsarrow_forward-> BOOKMARK NEXT Question 24/28 Using Chart 2 of the Pea Plant Punnett Squares, what are the chances of producing an offspring having a rough texture/shape and being green in color? 24 Use the diagrams below to answer the questions that follow. Pea Plants Chart 1 Punnett Square 3 Aa A a Aa Aa Chart 2 AaBb x AaBb AB Ab qe AaBb aB Key AA - Green AB AABB AABB | AaBB Ab AABB AAbb AaBb BB- Smooth Aabb aB AaBB ab AaBb Aabb aa - Yellow AaBb aaBB aaBb bb - Rough aaBb aabbarrow_forward
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- TOPIC: Variations in Gene Expression In a cross involving polygenic inheritance, three (3) gene pairs control plant height. The shortest and tallest plants are 12 cm and 24 cm, respectively. What height should all F1s display if the shortest and tallest plants were crossed, assuming environmental factors are the samearrow_forwardProblem: A homozygous tall, homozygous white flower plant crosses with a homozygous short, homozygous purple flower plant. We know that the purple and tall flowers are the dominant traits. Show your work. What are the phenotypes of the offspring?arrow_forwardMendel's Traits and Symbols for Pea Plants Symbol Symbol Traits Seed Shape Seed Color Seed Coat Color Pod Shape Dominant Allele Recessive Allele Round Yellow Colored Smooth Wrinkled Green White Constricted Yellow Pod Color Green Stem Height Tall Short Terminal Flower Position Axial Aarrow_forward
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