You are interested in the inheritance of seed color (the Y-locus) and seed shape (the S-locus)...
You are interested in the inheritance of seed color (the Y-locus) and seed shape (the S-locus) in corn plants. At the seed color locus, the Y allele (yellow seeds) is dominant to the y-allele (white seeds). At the seed shape locus, the S allele (smooth seeds) is dominant to the s allele (rough seeds). You perform the following dihybrid cross between two corn plants, one of which has a yellow and smooth seeds (genotype: YySs), the other of which has a green and rough seeds (yyss). In the F1’s, you observe the following genotype frequencies:
YySs: 943
yyss: 952
Yyss: 225
yySs: 217
The simplest interpretation of these data is that…
Group of answer choices
a.)heterozygous individuals are favored by selection.
b.)natural selection has acted against offspring with rough seeds.
c.)Mendel’s 2nd law of independent assortment is somehow violated.
d.)the seed color locus and the seed shape locus assort independently.
e.) Mendel’s 1st law of segregation is somehow violated.
Homework Answers
The correct option is c.) Mendel’s 2nd law of independent assortment is somehow violated.
Explanation -
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You are interested in the inheritance of seed color (the
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In this tutorial you will examine dihybrid crosses: crosses where alleles at separate loci assort independently...
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where alleles at separate loci assort independently into gametes at
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Part A - Deducing phenotypes and genotypes of selfed parents
Mendel studied pea plants dihybrid for seed shape (round versus
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Part A - Deducing phenotypes and genotypes of selfed parents Mendel studied pea plants dihybrid for...
Part A - Deducing phenotypes and genotypes of selfed parents
Mendel studied pea plants dihybrid for seed shape (round versus
wrinkled) and seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele
(r) and
the yellow allele (Y) is dominant to the green allele
(y).
The table below shows the F1 progeny that result from
selfing four different parent pea plants.
Use the phenotypes of the F1 progeny to deduce the
genotype and...
Deducting phenotypes and genotypes of selfed parents Mendel studied pea plants dihybrid for seed shape (round versus wrinkled) and seed color (yellow versus green). Recall that the round allele (R) is dominant to the wrinkled allele (r) and the yellow allele (Y) is dominant to the green allele (y). The table below shows the F1 progeny that result from selfing four different parent pea plants. Use the phenotypes of the F1 progeny to deduce the genotype and phenotype of each...
In this tutorial you will examine dihybrid crosses: crosses
where alleles at separate loci assort independently into gametes at
meiosis. You will also use logic to determine unknown genotypes,
phenotypes, and genetic ratios from given data.
Part A - Deducing phenotypes and genotypes of selfed parents
Mendel studied pea plants dihybrid for seed shape (round versus
wrinkled) and seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele
(r) and
the yellow allele...
12) In peas, the yellow seed color is dominant (YY or Yy) over the green seed color (vy). You have been given a plant that only produces yellow seeds and need to determine if the plant is YY or Yy. Which of the following crosses would be most effective for determining the genotype of your plant? A)your plant x a plant that produces only green seeds B)your plant x another plant with known genotype YY C)your plant x another plant...
Question 12 only.
Punnett's square analysis for the parental cross r Rr Rr 9) If we used the above offspring (F1) in a new cross, what would be the genotypes and phenotypes of the offspring of the Fz generation? 10) What is the genotypic ratio of the F2 generation? 11) What is the phenotypic ratio of the F2 generation? 12) What would be the genotypic and phenotypic ratios of offspring from a cross between a homozygous recessive parent (r r)...
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You are studying two genes in corn that you believe may be linked: seed shape and and kernel color. You cross two true-breeding corn plants (one with red kernels and round seeds to one with yellow kernels and wrinkled seeds) and receive all red- kerneled, round seed offspring. You then perform a test-cross using the F1 offspring and a yellow-kerneled, round seed corn and receive the following result: 610 red kernels, round seeds 90 yellow kernels, round seeds 100 red...
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98 Mendelian Genetics Exercise D: Mendel's Dihybrid Cross But wait there's morel Mender's monohybrid crosses established that inheritance of phenotypes happened by the interactions of discrete particles' (we now call alleles). Further, he discovered that those alleles segregate during the process of meiosis in the production of gametes, which recombine during fertilization. The result of these two insights can easily be predicted by a technique developed by R. C. Punnett. Once these principles were established, Mendel sought to understand how...
Part A - Deducing phenotypes and genotypes of selfed parents
Mendel studied pea plants dihybrid for seed shape (round versus
wrinkled) and seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele
(r) and
the yellow allele (Y) is dominant to the green allele
(y).
The table below shows the F1 progeny that result from
selfing four different parent pea plants.
Use the phenotypes of the F1 progeny to deduce the
genotype and...
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