Question

In: Biology

34. Consider two single-gene traits in pea plants: Green pods (G) are dominant to Yellow pods...

34. Consider two single-gene traits in pea plants: Green pods (G) are dominant to Yellow pods (g).Tall plants (T) are dominant to Dwarf plants (t).Two plants which are heterozygous for both traits are crossed. GgTt x GgTt What fraction of the offspring would be Tall plants with Green pods?

1/4

3/16

1/16

9/16

31. A man with AB type blood and a woman with O type blood have children together. What blood types would be seen in their offspring and in what ratio?

1 A : 1 B

9 AB : 3 A : 3 B : 1 O

1 AB : 1 O

3 AB : 1 O


30. For the trait pod shape, pea plants are either inflated (Q), or constricted (q). Inflated is the dominant form. In the P generation, A homozygous dominant pea plant is crossed with a plant possessing the constricted phenotype.If two individuals from the F1 generation are bred together, What percentage of the F2 generation would you expect to have the constricted phenotype?

50%

100%

75%

25%

Solutions

Expert Solution

34. The correct option is : 9/16

Green pod - G

Yellow pod - g

G is dominant over g

Tall plant - T

Dwarf plant - t

T is dominant over t

F2 generation = GgTt x GgTt

i) Gg x Gg

G g
G GG (green) Gg (green)
g Gg (green) gg (yellow)

Therefore, green pods = 3/4

ii) Tt x Tt

T t
T TT (tall) Tt (tall)
t Tt (tall) tt (dwarf)

Therefore, tall plants = 3/4

Therefore, total fraction of offsprings of tall plant with green pods are = (3/4) * (3/4) = 9/16

31. The correct option is 1A : 1B

The alleles of AB blood type: IA IB

The alleles of O blood type : IO IO

IA IB
IO IA IO IB IO
IO IA IO IB IO

Therefore, the blood type of offsprings = IA IO = Blood type A and IB IO = Blood type B

The ratio is A : B = IA IO : IB IO = 1 : 1

30. The correct option is : 25%

Inflated pea plant = Q

Constricted pea plant = q

Q is dominant over q

P generation = QQ x qq

F1 generation = Qq

F2 generation = Qq x Qq

Q q
Q QQ (inflated) Qq (inflated)
q Qq (inflated) qq (constricted)

Therefore the constricted phenotype = 1/4 = 0.25 = 25%

gladiator answered 2 years ago
Next > < Previous

Related Solutions

The recessive traits in garden pea plants are as follows: yellow pods (g) are recessive to...
The recessive traits in garden pea plants are as follows: yellow pods (g) are recessive to green pods (G); bluish-green seedlings (s) are recessive to green seedlings (S); creeper (p) (a plant that cannot stand up) is recessive to normal (P). A homozygous plant with green pods, green seedlings and normal stature was crossed to a creeper with yellow pods and bluish-green seedlings. The F1 plants were then crossed to creepers with yellow pods and bluish-green seedlings. The following results...
The recessive traits in garden pea plants are as follows: yellow pods (g) are recessive to...
The recessive traits in garden pea plants are as follows: yellow pods (g) are recessive to green pods (G); bluish-green seedlings (s) are recessive to green seedlings (S); creeper (p) (a plant that cannot stand up) is recessive to normal (P). A homozygous plant with green pods, green seedlings and normal stature was crossed to a creeper with yellow pods and bluish-green seedlings. The F1 plants were then crossed to creepers with yellow pods and bluish-green seedlings. The following results...
Three linked traits in garden pea plants are each controlled by two alleles. Yellow pods are...
Three linked traits in garden pea plants are each controlled by two alleles. Yellow pods are recessive to green pods, bluish green seedlings are recessive to green seedlings, and creeper is recessive to normal. A plant heterozygous for all three traits was crossed to a creeper plant with yellow pods and bluish green seedlings. The following F2 results were obtained: 171 green pods, bluish green seedlings, creeper 307 yellow pods, green seedlings, creeper 13 green pods, green seedlings, normal 2067...
1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed...
1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed colour (y). In a population of 40 pea plants, 15 pea plants are homozygous dominant, 15 are heterozygous dominant, and 10 are recessive. Find the frequency of the a.    YY genotype b.    Yy genotype c.    yy genotype 2.In sheep, a hairy coat (H) is dominant over woolly fleece (h). In a population of 20 sheep, 9 sheep are homozygous dominant and 9 sheep are heterozygous dominant. Find...
1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed...
1. IIn garden pea plants, the yellow seed colour (Y) is dominant over the green seed colour (y). In a population of 40 pea plants, 15 pea plants are homozygous dominant, 15 are heterozygous dominant, and 10 are recessive. Find the frequency of the a.    YY genotype b.    Yy genotype c.    yy genotype 2.In sheep, a hairy coat (H) is dominant over woolly fleece (h). In a population of 20 sheep, 9 sheep are homozygous dominant and 9 sheep are heterozygous dominant. Find...
Complete dominance inheritance governs pea color. Yellow is dominant to green. The F1 generation of a...
Complete dominance inheritance governs pea color. Yellow is dominant to green. The F1 generation of a cross all had the heterozygous genotype (Yy). A garden Yy plants were mated, and the F2 generation obtained 750 plants with yellow peas. SHOW YOUR WORK to determine how many green pea plants would you expect.
Part A: Punnett Squares I. Monohybrid Crosses 1. In pea plants yellow peas (A) are dominant...
Part A: Punnett Squares I. Monohybrid Crosses 1. In pea plants yellow peas (A) are dominant to green peas (a). Show a cross between two heterozygous yellow pea plants (Aa x Aa). A a A a What is the genotypic ratio of the offspring? _______ AA : _______ Aa: _________ aa What is the phenotypic ratio of the offspring? _______ Yellow: ________ Green Part B: Using the Chi-square (χ2) analysis 9. In Parent 1 (P1) corn plants, the color purple...
Trait Dominant Recessive Pea Shape Smooth (S) Wrinkled (s) Pea Color Yellow (Y) Green (y) Pod...
Trait Dominant Recessive Pea Shape Smooth (S) Wrinkled (s) Pea Color Yellow (Y) Green (y) Pod Shape Inflated (P) Constricted (p) Flower Position Axial (A) Terminal (a) Length of Stem Tall (T) Dwarf(t) 1. You cross two pea plants to create F1 progeny that are heterozygous for all 5 traits. a. What is the probability of one F1 plant generating a gamete with alleles for green peas that are wrinkled OR smooth? b. If you now cross two F1 plants,...
Mendel crossed pea plants that had yellow-round seeds with plants that had green-wrinkled seeds. The first...
Mendel crossed pea plants that had yellow-round seeds with plants that had green-wrinkled seeds. The first generation produced plants with all yellow-round seeds. Self crossing of these plants produced the following F2 phenotypes: Yellow-Round Yellow-wrinkled Green-round Green-wrinkled Count 315 101 108 32 The expected phenotypic ratio is 9:3:3:1 1. What are the null and alternate hypotheses for the chi-square goodness of fit test? 2. What are the expected counts under the null hypothesis? 3. Determine a chi-square test statistic and...
A scientist conducted a hybridization experiment using peas with green pods and yellow pods. He crossed...
A scientist conducted a hybridization experiment using peas with green pods and yellow pods. He crossed peas in such a way that​ 25% (or 142​) of the 568 offspring peas were expected to have yellow pods. Instead of getting 142 peas with yellow​ pods, he obtained 144. Assume that the rate of​ 25% is correct. a. Find the probability that among the 568 offspring​ peas, exactly 144 have yellow pods. b. Find the probability that among the 568 offspring​ peas,...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT