Explain what is true breeding?
Explain what is true breeding?
Homework Answers
Ans:
True breeding is the breeding where two pure homozygous organisms produce same phenotypic offsprings like parent if they can selfpollinate and this same phenotype offsprings can be seen in generation after generation. For example, if two pure homozygous tall plants (TT × TT) are crossed, all the offsprings are tall with same phenotypic and genotypic characters.
TT × TT
Tall Tall
| T | T | |
| T |
TT Tall |
TT Tall |
| T |
TT Tall |
TT Tall |
Similarly, all the short plants (tt) are produced in a cross between two pure homozygous recessive organisms (tt × tt).
A true-breeding strain of zebras that have 60 stripes is crossed with a true-breeding strain of...
A true-breeding strain of zebras that have 60 stripes is crossed with a true-breeding strain of zebras that have 0 stripes. All of the F1 zebras have 30 stripes. You cross many F1 zebras to each other to obtain a large F2 population. In the F2, there are some zebras with 0 stripes, some with 10 stripes, some with 20 stripes, some with 30 stripes, some with 40 stripes, some with 50 stripes, and some with 60 stripes. Approximately how...
7. A cross is made between a true-breeding shaggy Llama strain and a true- breeding short...
7. A cross is made between a true-breeding shaggy Llama strain and a true- breeding short haired Llama strain. The shaggy Llamas are also homozygous brown: the short-haired ones are homozygous cream coloured. An F2 from their progeny gave the following phenotypes Shaggy brown Short cream Shaggy cream Short brown Propose a model to explain this pattern of phenotypes and test this model using a chi-square test.
Mendel bred pea plants for multiple generations to ensure they were true-breeding. What is true-breeding? The...
Mendel bred pea plants for multiple generations to ensure they were true-breeding. What is true-breeding? The organism always produces offspring every time it breeds. The organism will only breed with itself. The organisms will only breed with others that have the same trait. The organisms always produce offspring with the same traits as the parent. Question 2 The F1 generation can best be described as... the first generation the offspring of the P generation the homozygous generation
A true breeding plant for round and yellow seeds is crossed to a true breeding wrinkled...
A true breeding plant for round and yellow seeds is crossed to a true breeding wrinkled and green seeds. All progeny are round and yellow seeds. A plant from the F1 is crossed to a true breeding wrinkled and green seed's plant, producing the following offspring: 32 yellow and round seeds, 36 wrinkled and green seeds, 15 yellow and wrinkled seeds and 17 green and round seeds. What is the map distance between the color gene and the size gene?...
A true breeding plant that produces white flowers is crossed with a true breeding plant that...
A true breeding plant that produces white flowers is crossed with a true breeding plant that produces red flowers. The resulting F1 are all plants with pink flowers. One of the pink-flowered plant is crossed to a true breeding white plant and 16 plants are produced. How many plants do you expect to see from each phenotype? Select one: a. 12 pink and 4 white b. 16 pink c. It is impossible to know due to linkage d. 8 red...
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...
A true breeding dominant plant (colored, green) is crossed with a true breeding recessive plant (colorless,...
A true breeding dominant plant (colored, green) is crossed with a true breeding recessive plant (colorless, yellow). The F1’s are then intercrossed to give the following F2 results: colored, green (C_G_) 180 colored, yellow (C_gg) 28 colorless, green (¢¢G_) 20 colorless, yellow (¢¢gg) 188 Perform a Chi-square test to determine whether the genes are linked or unlinked. What is your X2 value?
2 vered A true breeding plant that produces white flowers is crossed with a true breeding...
2 vered A true breeding plant that produces white flowers is crossed with a true breeding plant that produces red flowers. The resulting F1 are all plants with pink flowers. One of the pink-flowered plant is crossed to a true breeding white plant and 16 plants are produced. How many plants do you expect to see from each phenotype? f 2.50 estion Select one: a. 16 pink b. 12 pink and 4 white c. 8 red and 8 white d....
You conduct a cross between a true-breeding line of white fish and a true-breeding line of...
You conduct a cross between a true-breeding line of white fish and a true-breeding line of red fish. The F1 fish are all white. When the F1 fish are crossed to produce the F2 generation, the following data is obtained: White: 128 Red: 53 Pink: 42 Hypothesize a mode of inheritance for color in these fish.
9) A flower breeder notices that a cross between true-breeding red roses and true-breeding white roses...
9) A flower breeder notices that a cross between true-breeding red roses and true-breeding white roses makes all red-flowering F1 offspring. Interbreeding these F1 offspring, she gets 100 red-flowering roses, 40 pink-flowering roses, and 44 white-flowering roses in the F2 generation. What are the genotypes of the parents, F1 offspring, and F2 offspring? What is the probable mode of inheritance? Check your answer with the appropriate statistical test.
7. A cross is made between a true-breeding shaggy Llama strain and a true- breeding short haired Llama strain. The shaggy Llamas are also homozygous brown: the short-haired ones are homozygous cream coloured. An F2 from their progeny gave the following phenotypes Shaggy brown Short cream Shaggy cream Short brown Propose a model to explain this pattern of phenotypes and test this model using a chi-square test.
Mendel bred pea plants for multiple generations to ensure they were true-breeding. What is true-breeding? The organism always produces offspring every time it breeds. The organism will only breed with itself. The organisms will only breed with others that have the same trait. The organisms always produce offspring with the same traits as the parent. Question 2 The F1 generation can best be described as... the first generation the offspring of the P generation the homozygous generation
A true breeding plant for round and yellow seeds is crossed to a true breeding wrinkled and green seeds. All progeny are round and yellow seeds. A plant from the F1 is crossed to a true breeding wrinkled and green seed's plant, producing the following offspring: 32 yellow and round seeds, 36 wrinkled and green seeds, 15 yellow and wrinkled seeds and 17 green and round seeds. What is the map distance between the color gene and the size gene?...
A true breeding plant that produces white flowers is crossed with a true breeding plant that produces red flowers. The resulting F1 are all plants with pink flowers. One of the pink-flowered plant is crossed to a true breeding white plant and 16 plants are produced. How many plants do you expect to see from each phenotype? Select one: a. 12 pink and 4 white b. 16 pink c. It is impossible to know due to linkage d. 8 red...
2 vered A true breeding plant that produces white flowers is crossed with a true breeding plant that produces red flowers. The resulting F1 are all plants with pink flowers. One of the pink-flowered plant is crossed to a true breeding white plant and 16 plants are produced. How many plants do you expect to see from each phenotype? f 2.50 estion Select one: a. 16 pink b. 12 pink and 4 white c. 8 red and 8 white d....
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