When heterozygous tall plants are self – pollinated , then tall and dwarf plants are obtained .
When heterozygous tall plants are self-pollinated than tall and dwarf plants are obtained This is explain to?
When heterozygous tall plants are self-pollinated, then tall and dwarf plants are obtained. This explains the law of segregation.
When heterozygous tall plants are self crossed the results obtained were both tall and short plants?
Assertion (A): When heterozygous tall plants were self crossed, the result obtained were both tall and short plant. Reason (R): Heterozygous plants contain both dominant and recessive alleles. a) Both A and R are true, and R is correct explanation of the assertion.
What would be the result if a tall plant is self-pollinated?
When we cross homozygous tall (TT) and dwarf plants (tt), in the F1 generation, we get all the tall plants with the genotype Tt. When heterozygous tall (Tt) plants are self-pollinated, we get tall and dwarf plants in the ratio 3:1 in the F2 generation.
When f1 plants heterozygous for tallness is Selfed?
If a plant heterozygous for tallness is selfed, the. generation has both tall and dwarf plants.
What indication do we get by the appearance of dwarf plant in f2 generation?
Answer. We get indication that although dwarfness is a recessive gene but still it shows its existence. The existence of Dwarfness is shown in the first progeny in the genotypic ratio but then in the 2nd progeny it shows in both genotypic and phenotypic ratio.
When heterozygous tall plants are Selfed then the genotypic ratio of the progeny is?
A heterozygous tall pea plant is taken with the genotype formula Tt. Here, T is inherited from the tall plant, and t is inherited from the dwarf plant. The heterozygous tall (Tt) plant is crossed with a homozygous dwarf (tt) plant. Thus the ratio of progeny will be 1:1.
What result Mendel would have got if he self-pollinated a homozygous tall F plant a TT and TT B All TT C all TT D All TT?
T | T | |
---|---|---|
T | TT | TT |
When heterozygous tall plants are self-pollinated then?
When heterozygous tall plants are self – pollinated , then tall and dwarf plants are obtained .
What do you think if he would have got had he self-pollinated a tall F2 plant?
Explanation: Tall F2 plants can be heterozygous as well as homozygous in genotype. If in heterozygous conditions, self-pollination is done then 75% of all plants will be tall. In the second case of homozygosity, self-pollination will give all tall plants.
What will be the result in F2 progeny when the plants obtained in F1 generation were self-pollinated?
The F2 generation results from self-pollination of F1 plants and contained 75% purple flowers and 25% white flowers.
What is heterozygous tall plant?
A heterozygous tall plant(Tt) is crossed with homozygous dwarf plant(tt). In the next generation 50% of heterozygous tall plants and 50% of homozygous dwarf plants are formed. It is called Test cross.
When a heterozygous tall plant is crossed with dwarf parent the progeny will be?
Phenotypic ratio = 1 tall : 1 dwarf, i.e., 50% tall : 50% dwarf.
When a homozygous tall pea plant is crossed with heterozygous tall plant what will be the phenotypic ratio of progeny according to normal Mendelian inheritance?
Explanation: The phenotypic ratio will be 1 tall:1 dwarf.
When F₁ plants heterozygous for tallness are Selfed F2 generation has both tall and dwarf plants this proves the principle of?
So, the correct answer is “Segregation“.
Which of the following is heterozygous for two pairs of alleles?
Correct Option – A TtRR Explanation-‘Tt’ and ‘Rr’ are the two pairs of heterozygous alleles.
Why is the progeny always tall when a tall pea plant is crossed with?
Why is the F1 progeny always of tall plants when a tall pea plant is crossed with a short pea plant? The progeny is not always tall, but most of the time tall because tallness is a dominant character and dwarfness is a recessive character. The ratio of tallness is to dwarfness is always 3:1 whenever they are crossed.
What do plants of F2 generation look like?
Plants of F generation are all Tall. Dwarf plants: It is due to in F1 generation. Tall is a dominant trait but in F2 generation, two copies of ‘tt’ recessive traits appear as dwaft plant.
How many genotypes and phenotypes are produced in the F2 generation of a Dihybrid cross?
So the correct answer is “Phenotypes-4, Genotypes-9“.
Why is the progeny always tall?
When a tall pea plant is crossed with a short pea plant, the resultant progeny is always tall because tall is dominant trait and short is recessive trait. Therefore, dominant trait expresses itself in the progeny.
What result Mendel would have had he Pollozated heterozygous tall F1 plants?
When F2-generation is selfpollinated, some of the tall plants produced the tall plants (TT) only and the other tall plants produced the tall and dwarf plants and dwarf plants produced only dwarf plants. When tall F2 plants are selfed, only tall plants are produced in regeneration.
How many genotypes are formed in Mendelian Dihybrid cross?
That is, we expect a characteristic 1:2:1:2:4:2:1:2:1 ratio of the nine possible genotypes. These nine genotypes can be grouped into four phenotypes, for example 1 YYRR + 2 YYRr + 2 YyRR + 4 YyRr = 9Y-R- round, yellow peas.
What will be the ratio of F2 progeny if F1 tall plants reproduce by self-pollination?
So, the correct option is ‘3:1‘.
When F1 plants are self-pollinated which new combination of character is expected in F2 progeny?
The new combination in F2 progeny will be round, yellow and wrinkled green. The phenotypic ratio 9:3:3:1 is obtained.
What happen when the F1 progeny obtained above are used to produce F2 progeny by self-pollination?
When, he used these F1 progeny to generate F2 progeny by self-pollination, he found that some F2 progeny were tall plants with round seeds, and some were short plants with wrinkled seeds. … Thus, Mendel’s experiments show that the tall/short trait and the round seed/wrinkled seed trait are independently inherited.
When you cross a heterozygous tall pea plant with a homozygous tall pea plant what percent of the offspring will be tall?
So, the correct option is ‘50%‘.
When we cross heterozygous tall plant with homozygous recessive plant what is the percentage of homozygous dominant offspring?
So, the correct answer is ‘50%“.
What is homozygous tall plant?
A homozygous tall pea plant will have the genotype “TT” and a homozygous short plant will have the genotype “tt” because homozygous means that both alleles are identical. Since “T” is dominant over “t”, any plant with at least one “T” allele will be tall (the dominant trait), regardless of what the other allele is.
What are the genotypes of a homozygous and a heterozygous tall plant?
This makes the inheritance easy to observe and follow. What are the genotypes of a homozygous and a heterozygous tall pea plant? DD is homozygous dominant, gives phenotype tall. Dd is heterozygous, also gives the phenotype tall.
When heterozygous tall plants are self Then tall and dwarf plants are obtained This is explain to?
Solution : When heterozygous tall plants (Tt) are self-pollinated, then tall and dwarf plants are obtained in the ratio of 3 : 1 It shows the law of segregation.
When crossing two heterozygous plants What is the probability of producing a heterozygous plant?
In a cross between two hetozygotes (Aa), the next generation will have a 1:1 ratio of homozygotes to heterozygotes. Both a homozygous dominant and heterozygous genotype can result in the same dominant phenotype. Bb crossed with bb results in 50% purple flowers and 50% white flowers.
What do you understand by homozygous tall plant and heterozygous tall plant?
Heterozygous is a condition when there are two different traits of a particular gene. Homozygous is a condition when there are identical traits of a particular gene.
When heterozygous tall plants were crossed with dwarf plants what will be the ratio of dwarf plants in the following progeny?
Solution. 50% of the progeny will be dwarf and 50% of the progeny will be tall.
When heterozygous tall plants are Selfed then the genotypic ratio of the progeny is?
A heterozygous tall pea plant is taken with the genotype formula Tt. Here, T is inherited from the tall plant, and t is inherited from the dwarf plant. The heterozygous tall (Tt) plant is crossed with a homozygous dwarf (tt) plant. Thus the ratio of progeny will be 1:1.
When f1 plants heterozygous for tallness is Selfed f2 generation has both tall and?
If a plant heterozygous for tallness is selfed, the. generation has both tall and dwarf plants.
Is heterozygous dominant or recessive?
An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive.
When a heterozygous offspring is crossed with homozygous recessive parent the cross is known as?
When a heterozygous offspring is crossed with homozygous recessive parent, the cross is known as test cross e.g.
What are the heterozygous genotypes?
(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
When F1 plants are self pollinated?
When F1 plants were self – pollinated, a total of 800 plants were produced.
How does F2 progeny obtain self-pollination?
The F2 progeny is obtained by making self-pollination between the F1 progeny. Two F1 progenies selected are self-pollinated and the F2 progeny is obtained and it can’t be cross-pollinated.
Why are only tall plants observed in F1 generation?
This is because the tall character is dominant over the short character in pea plant. So when the gene for tallness(T) is present along with the gene for shortness or dwarfness in the pea plant, only the tall character gets expressed.
When we cross tall plant with short plant which plant will morphologically appear in F1 generation 1 point?
In pea plant, when pure tall pea plant (TT) is crossed with pure short (tt) plant, F1 generation will be all Tt (tall plant). Thus, the ratio of pure tall plants (TT) to heterozygous breed tall plants (Tt) to pure short plants (tt) is 1:2:1.
When a tall and dwarf pea plant were crossed F1 showed only tall plants but in F2 generation some plants were dwarf what does it mean?
Dwarf plants were not found in F1 generation, but appeared in F2 generation. This occurred due to dominance of allele responsible for tallness. The recessive alleles are expressed only in homozygous condition/similar alleles in pair (tt).
What is the ratio of tall plants to dwarf plants in F2 generation?
Ans2) Ratio of tall plants to dwarf plants obtained in F2 generation is 3:1.
Why is F2 progeny different from F1 progeny?
f2 progeny was different from f1 because the offspring of f1 was self pollinated. Was this answer helpful?
How is F2 progeny different from F1 progeny?
F1 progeny shows the traits of only one parent while in F2 progeny the traits of parents are randomly generated.
What result Mendel would have got if he self-pollinated a homozygous tall F plant a TT and TT B All TT C all TT D All TT?
T | T | |
---|---|---|
T | TT | TT |
When self pollinate F1 tall plant?
When plants of F1 generation were produced, all of them were tall plants. After that, Mendel wanted to understand the fate of the recessive character. He did not want any other character set to mask the effect of inheritance to F2 generation. Hence, he simply self-pollinated the tall F1 plants.
How many types of genotypes are formed in F2 progeny obtained from self pollination of a Dihybrid F1?
So, 9 types of genotypes are formed.
What is the percentage of heterozygous offspring?
The Punnett square below makes it clear that at each birth, there will be a 25% chance of you having a normal homozygous (AA) child, a 50% chance of a healthy heterozygous (Aa) carrier child like you and your mate, and a 25% chance of a homozygous recessive (aa) child who probably will eventually die from this …