When the P generation of true-breeds, are allowed to crossed, the probability that the F1 offspring...
When the P generation of true-breeds, are allowed to crossed, the probability that the F1 offspring will express a homozygous genotype (either recessive or dominant) is:
0%
25%
100%
50%
Homework Answers
When 2 plants which are pure breeding are crossed the resultant progeny will have 2 alleles in heterozygous condition. The genotype must be heterozygous. So the probability of F1 offspring to be with homozygous genotype is zero.
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When the P generation of true-breeds, are allowed to crossed,
the probability that the F1 offspring...
In snapdragons, when true-breeding red flowers are crossed with true-breeding white flowers, all the offspring exhibit...
In snapdragons, when true-breeding red flowers are crossed with true-breeding white flowers, all the offspring exhibit pink flowers. When true-breeding tall snapdragons are crossed with dwarf snapdragons, all the offspring are tall. A researcher decided to perform a dihybrid cross with the above characters and obtained all pink, tall snapdragons (F1). It was then decided to perform across with members of the F1 generation. What are the expected phenotypic ration for the F2 generation? (PLEASE INCLUDE LEGENDS, PUNNET SQUARES and...
Explain Mendel’s first two crosses and the proportions of phenotypes in each generation of offspring. How...
Explain Mendel’s first two crosses and the proportions of phenotypes in each generation of offspring. How do Punnett Squares work? Explain the following terms: gene, allele, genotype, phenotype, homozygous, heterozygous, dominant, recessive. Explain the difference between homozygous dominant, homozygous recessive, and heterozygous genotypes. What is mutation? How do different types of point mutations have different outcomes? What types of chromosomal mutations can occur? How and when do mutations lead to evolutionary change?
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes....
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes. C)genotypes. D)codominants. E)incomplete dominants. 2) Mendel carried out most of his research with A)livestock -B)pea plants. C)guinea pigs. D)fruit flies. E)bacteria. 3) Which of the following is true according to Mendel's law of segregation? A)Each individual contains two alleles for each trait. B)Fertilization restores the presence of two alleles. C)Alleles separate from each other during gamete formation. D)Each gamete contains one copy of each...
Part 2: Data Tables Table 1: Parent Genotypes: Monohybrid Crosses Generation Genotype of Individual #1 Genotype...
Part 2: Data Tables Table 1: Parent Genotypes: Monohybrid Crosses Generation Genotype of Individual #1 Genotype of Individual #2 P Yy SS P1 Sy Sy P2 yS yy P3 Sy Sy P4 Sy Sy Table 2: Generation Data Produced by Monohybrid Crosses Generation Possible Offspring Genotypes Possible Offspring Phenotypes Genotype Ratio Phenotype Ratio P YY Yy yy Yellow or Blue 1:2:1 3:1 P1 YY Yy yellow 1:1 1 P2 Yy yy Yellow or Blue 1:1 1:1 P3 Yy yy Yellow...
GENETICS PROBLEMS 1. The gene for widow's peak (W) is dominant to the gene for straight hairline...
GENETICS PROBLEMS 1. The gene for widow's peak (W) is dominant to the gene for straight hairline (w). A male homozygote with widow's peak marries a female homozygote with straight hairline, what are the possible genotypic and phenotypic ratios of the F1 and F2 generations that may result from the union? Phenotype of Parents ………………………… x ………………………… Genotype of Parents ………………………… x ………………………… Genes in gametes ………………………… x ………………………… Genotype of F1 Generation ………………………… Phenotype of F1 Generation ………………………… Genes in F1 gametes ………………………… or ………………………… (Punnett Square)...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with a pea plant that bred true for terminal flowers. All the F1 plants had axial flowers. Which is the recessive trait? Explain your answer. 2. Green pod color is a dominant allele in pea plants (G). If two plants with green pods are crossed, some of the offspring have yellow pods. What are the possible genotypes of the parents? 3. In garden peas, one...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding experiments with his pea plants. ai Genetic makeup: In this particular experiment with pea plant height, the P generation consisted of pure- breeding tall pea plants mated with pure- breeding dwarf pea plants. Gametes: 0 plants nated wito Fill in the blanks of the following paragraph ,geneation concerning this experiment. Gregor Mendel discovered several new ideas about inheritance when he performed breed- Genetic makeup: ing...
Using a Punnett square cross a homozygous dominant and homozygous recessive parents. What is the probability...
Using a Punnett square cross a homozygous dominant and homozygous recessive parents. What is the probability that one of the offspring will be an albino (this is a recessive trait)? A. 100% B. 50% C. 25% D. 0%
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive phenotype. b flowers are red, pink, or white c. whether an individual is homozygous or heterozygous. d. what types of offspring could be produced 36. If red flower color is dominant over white and a homozygous red flowered plant was crossed with a homozygous white flowered plant, what percentage of their offspring in the Fi generation would have white flowers? a. b. с. 100%...
does someone know the answer for these questions? Thank you so much 3. In certain breeds...
does someone know the answer for these questions? Thank you so
much
3. In certain breeds of dogs, black color is dominant and red color is recessive. Solid color is dominant and spotting is recessive. A homozygous black male is crossed with a red-and-white spotted female. What is the probability of them producing a solid black puppy? 4. In horses, black color (B) dominates chestnut color (b). The trotting gait (T) dominates the pacing gait (t). A cross is made...
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes. C)genotypes. D)codominants. E)incomplete dominants. 2) Mendel carried out most of his research with A)livestock -B)pea plants. C)guinea pigs. D)fruit flies. E)bacteria. 3) Which of the following is true according to Mendel's law of segregation? A)Each individual contains two alleles for each trait. B)Fertilization restores the presence of two alleles. C)Alleles separate from each other during gamete formation. D)Each gamete contains one copy of each...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding experiments with his pea plants. ai Genetic makeup: In this particular experiment with pea plant height, the P generation consisted of pure- breeding tall pea plants mated with pure- breeding dwarf pea plants. Gametes: 0 plants nated wito Fill in the blanks of the following paragraph ,geneation concerning this experiment. Gregor Mendel discovered several new ideas about inheritance when he performed breed- Genetic makeup: ing...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive phenotype. b flowers are red, pink, or white c. whether an individual is homozygous or heterozygous. d. what types of offspring could be produced 36. If red flower color is dominant over white and a homozygous red flowered plant was crossed with a homozygous white flowered plant, what percentage of their offspring in the Fi generation would have white flowers? a. b. с. 100%...
does someone know the answer for these questions? Thank you so
much
3. In certain breeds of dogs, black color is dominant and red color is recessive. Solid color is dominant and spotting is recessive. A homozygous black male is crossed with a red-and-white spotted female. What is the probability of them producing a solid black puppy? 4. In horses, black color (B) dominates chestnut color (b). The trotting gait (T) dominates the pacing gait (t). A cross is made...
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