If you use a Punnett square <(Broken Link Removed) you will be able to test the genotype probabilities. Assuming R indicates a dominant gene and r indicates a recessive, whenever you have an R in the genotype, you will have a round seed. Only rr wil result in wrinkled seeds.
I hope this helps. Thanks for asking.
Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3:1.
If the allele are designated (R & r) respectively, what is the probable genotypes of the wrinkled seeds which were produced (F1)?
RR & Rr
RR only
RR & rr
Rr only
rr only
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Question #4
MultipleChoice
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Note to teacher:
Note from teacher:
Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3:1.
If the allele are designated (R & r) respectively, what is the probable Phenotype of the parents (P1)?
all round
all wrinkled
1:1 round & wrinkled
unable to determine
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Question #5
ClickAndPlace
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Note to teacher:
Note from teacher:
If the problem type is labeled “ClickAndPlace”,click the item to select it and then click the location where it belongs;otherwise, click the item and drag it into place.
Diagram the genotypes of the P1 pea plants from the previous four questions by placing the correct answer on its correct place.
Eraser
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Question #6
ClickAndPlace
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Note to teacher:
Note from teacher:
If the problem type is labeled “ClickAndPlace”,click the item to select it and then click the location where it belongs;otherwise, click the item and drag it into place.
The results of a test cross of a tall tomato plant was 100% tall. Fill in the punnett square if all the recessive alleles (genes) came from pollen during the cross test.
Eraser
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Question #7
MultipleSelect
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Note to teacher:
Note from teacher:
The female genotype of the previous problem is:
TT
Tt
tt
homozygous
heterozygous
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Question #8
ClickAndPlace
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Note to teacher:
Note from teacher:
If the problem type is labeled “ClickAndPlace”,click the item to select it and then click the location where it belongs;otherwise, click the item and drag it into place.
Complete the punnet square for the following cross-pollination.
Female: male:
Eraser
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Question #9
FillInBlank
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Note to teacher:
Note from teacher:
From the previous problem, give the genotypic and phenotypic ratios (TT x Tt) for tall and short corn.
phenotype:
genotype ratio TT: Tt
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Question #10
ClickAndPlace
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Note to teacher:
Note from teacher:
Complete the Punnett square for the following cross-pollination and give the genotypic and phenotypic ratios: for white (WW) and black (ww)
Female: x Male:
Eraser
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Question #11
TextMultipleChoice
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Note to teacher:
Note from teacher:
With the parents from the previous problem (white WW, black ww) give the phenotype and genotype ratios for this cross.
Phenotype:
genotype ratio Ww:ww
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Question #12
FillInBlank
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Note to teacher:
Note from teacher:
To determine if a particular plant is homozygous or heterozygous you would have to with a recessive to make the check.
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Question #13
FillInBlank
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Note to teacher:
Note from teacher:
A test cross is a cross between the unknown genotype and a homozygous .
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Question #14
ClickAndPlace
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Note to teacher:
Note from teacher:
Complete a Punnett square that shows a test cross for a tall pea plant( RR x rr ) by placing the correct answer in its correct place. Place the plant to be tested at the top of the Punnett Square.)
Eraser
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Question #15
TextMultipleChoice
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Note to teacher:
Note from teacher:
With the following crosses of pea plants, give the flower color of offspring and the ratio expected (red
is dominant).
Red x red (both homozygous)
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Question #16
TextMultipleChoice
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Note to teacher:
Note from teacher:
Red (heterozygous) x white (homozygous)
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Question #17
TextMultipleChoice
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Note to teacher:
Note from teacher:
Red (heterozygous) x red (homozygous)
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Question #18
TextMultipleChoice
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Note to teacher:
Note from teacher:
Red x red (both heterozygous)
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Question #19
TextMultipleChoice
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Note to teacher:
Note from teacher:
In a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the genes cause the traits to mask the traits.
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Question #20
FillInBlank
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Note to teacher:
Note from teacher:
A cross between plants which differ in only two traits is a cross.
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Question #21
FillInBlank
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Note to teacher:
Note from teacher:
A student analyzed ears of corn that demonstrated two traits in the F2 kernels, purple and white colors and smooth and wrinkled shape. A tabulation of 135 individual kernels gave the following results:
(purple smooth = 75, white smooth = 28, purple wrinkled = 24, white wrinkled = 8)
How many phenotypes are present?
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Question #22
Unordered
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Note to teacher:
Note from teacher:
A student analyzed ears of corn that demonstrated two traits in the F2 kernels, purple and white colors and smooth and wrinkled shape. A tabulation of 135 individual kernels gave the following results:
(purple smooth = 75, white smooth = 28, purple wrinkled = 24, white wrinkled = 8)
What are the phenotypes present?
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Question #23
TextMultipleChoice
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Note to teacher:
Note from teacher:
(purple smooth = 75, white smooth = 28, purple wrinkled = 24, white wrinkled = 8)
Which alleles are dominant?
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Question #24
TextMultipleChoice
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Note to teacher:
Note from teacher:
(purple smooth = 75, white smooth = 28, purple wrinkled = 24, white wrinkled = 8)
Which alleles are recessive?
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Question #25
ClickAndPlace
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Note to teacher:
Note from teacher:
(purple smooth (PR)= 75, white smooth (pR)= 28, purple wrinkled (Pr)= 24, white wrinkled (pr)= 8)
Using symbols, diagram a cross that would give these results by completing the punnet square by placing the correct answers in their appropriate spot.
Eraser
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Question #26
FillInBlank
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Note to teacher:
Note from teacher:
(purple smooth = 75, white smooth = 28, purple wrinkled = 24, white wrinkled = 8)
According to the Punnett square you completed in the previous question, the predicted results should have been 9/16 purple smooth (56.3%), 3/16 purple wrinkled (18.8%), 3/16 white smooth (18.8%), and 1/16 white wrinkled (6.3%).
Do the corn kernels compare in number exactly to the predicted number?
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Question #27
Paragraph
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Note to teacher:
Note from teacher:
(purple smooth = 75, white smooth = 28, purple wrinkled = 24, white wrinkled = 8)
Account for the difference between the expected and experimental values.
Save
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Question #28
FillInBlank
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Note to teacher:
Note from teacher:
One of Mendel's main principles of inheritance, the principle of is illustrated with the previous activities.
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Question #29
TrueFalse
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Note to teacher:
Note from teacher:
All the gene pairs from one parent can congregate in one gamete and those from the other parent in other gamete.
True
False
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Question #30
FillInBlank
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Note to teacher:
Note from teacher:
The phenotypic ratio for the F2 generation in a dihybrid cross will theoretically be .
1 answer
1 answer