Can two plants with purple flowers produce offspring with white flowers?
Yes
, if both parents are heterozygous for the trait.
How can two purple-flowered parents produce white flowered offspring?
If Purple is dominant,
then white is recessive
. In order to have a plant with recessive traits it must be homozygous recessive; therefore, the plants will be white.
Could a plant with purple flowers and one with white flowers produce purple-flowered plants?
Because the b allele is recessive, you know that the white-flowered parent must have the genotype bb. The purple-flowered parent, on the other hand, could have either the BB or the Bb genotype. … This Punnett square shows a cross between a white-flowered
pea
plant and a purple-flowered pea plant.
What is the probability of two heterozygous purple flowers making offspring that have white flowers?
The probability that one of their offspring will have white flowers is
1/4
.
When Mendel crossed purple flowers with white flowers?
What was the result when Mendel crossed true-breeding purple flowers with white flowers?
All the offspring were purple
.
Could two white flowers produce plants with purple flowers?
Can two plants with purple flowers produce offspring with white flowers?
Yes
, if both parents are heterozygous for the trait.
When Mendel crossed a plant with purple flowers with a plant with white flowers how many of the first generation F1 were white?
Mendel’s Results
Mendel noted the ratio of white flowered plants to purple-flowered plants was
about 3:1
. That is, for every three purple-flowered plants, there was one white flowered plant.
What ratio of offspring are tall with purple flowers?
| A B | Purple flower color is dominant to white flowers in pea plants. What is the phenotypic ratio of the offspring from two hetreozygous parents? 3 (75%) Purple : 1 (25%)White |
|---|
What is the ratio of purple flowers to white flowers 1?
In Mendel’s experiment, 705 plants had purple flowers, and 224 had white flowers, a ratio of about
3 purple : 1 white
.
When Mendel crossed white-flowered and purple-flowered plants the hybrid offspring in the first generation or F1 generation were all?
Mendel then crossed these pure-breeding lines of plants and recorded the traits of the hybrid progeny. He found that all of the first-generation (F1) hybrids looked like 1 of the parent plants. For example, all the progeny of a purple and white flower cross were purple (not pink, as blending would have predicted).
Which is dominant purple or white flowers?
| Trait Dominant Expression Recessive Expression | Color of seed albumen (Y) Yellow Green | Color of flower (P) Purple White | Form of ripe pods (I) Inflated Constricted | Color of unripe pods (G) Green Yellow |
|---|
What percentage of offspring have white flowers?
Predicting Offspring Phenotypes
Therefore, in this cross, you would expect three out of four (75 percent) of the offspring to have purple flowers and
one out of four (25 percent)
to have white flowers. These are the same percentages that Mendel got in his first experiment.
What is the probability of getting a plant with white flowers?
| The Results of Mendel’s Garden Pea Hybridizations | Characteristic Contrasting P 0 Traits F 1 Offspring Traits | Flower color Violet vs. white 100 percent violet | Flower position Axial vs. terminal 100 percent axial | Plant height Tall vs. dwarf 100 percent tall |
|---|
Why was Mendel able to produce both purple and white flowers in his experiment when he started with two purple flowers?
To obtain these plants, Mendel allowed plants with just one trait, such as purple flowers or white flowers,
to self-pollinate for many generations
. He allowed this to continue until he was sure the offspring from those plants always had only just the one trait, in this case, either purple flowers or white flowers.
When Mendel used true-breeding white flowers and true-breeding purple flowers as the parental generation he obtained Which of the following results?
When Mendel used true-breeding white flowers and true-breeding purple flowers as the parental generation, what were the results? (Purple flower is dominant over white.)
the chromosome number would double in each generation
. You just studied 20 terms!
When Mendel crossed two different true-breeding pea plants one with purple flowers and the other with white flowers the phenotypic ratio of the F1 was 100% white?
This was a ratio of 3.15 violet flowers to one white flower, or
approximately 3:1
. When Mendel transferred pollen from a plant with violet flowers to the stigma of a plant with white flowers and vice versa, he obtained approximately the same ratio irrespective of which parent—male or female—contributed which trait.
What is offspring phenotype?
The phenotype is
the trait those genes express
. … Looking at the possible offspring, each box (or possible offspring) has two copies of the dominant gene. This means there is a 100% chance of the offspring having brown eyes, or being BB. It’s important to note here that each box represents a possible offspring.
What is the genotype of the purple and white flower in the P generation?
The F
1
plants all have one purple allele (P) and one white allele (p). The genotype is the alleles for each gene in the plant. Here the genotype is
Pp
.
What is co dominant?
= Codominance is
a relationship between two versions of a gene
. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.
What is offspring genotype?
An offspring’s genotype is
the result of the combination of genes in the sex cells or gametes (sperm and ova) that came together in its conception
. One sex cell came from each parent. Sex cells normally only have one copy of the gene for each trait (e.g., one copy of the Y or G form of the gene in the example above).
When Mendel crossed a true breeding plant with purple flowers and a true breeding plant with white flowers all offspring had purple flowers Why did this happen?
They would be all
purple because purple is the dominant trait and it blocks out the white recessive trait
. A cross between two pink camellia plants produced the following offspring: 7 plants with red flowers, 7 with white flowers, and 14 with pink flowers.
What is the expected ratio of purple to white flowers in the F2?
There was a
3:1 ratio
of purple:white flowers in generation F2 because the “masked” (recessive) genes from the F1 generation were allowed to pair, however they were only allowed to pair one time leaving the other three times to appear with purple flowers.
What is the expected ratio of purple flowered PP and PP to white flowered pp offspring?
The F
1
generation will be entirely heterozygous, thus the F
2
generation is the result of a heterozygous self-cross. A Punnet square reveals that 75% of the generation will be purple (PP or Pp) and
25% will be white (pp)
. Of the three purple flowers in the punnett square, two of them are heterozygous for color (Pp).
What is the genotype of the purple flower plant?
The genotype of purple flowered pea plants is denoted as
WW
and that of white flowered pea plants as ww. When these two are crossed?
What is the ratio of offspring that have round seeds and yellow seed color?
That is, we expect a characteristic
9:3:3:1
phenotypic ratio of round-yellow : wrinkled-yellow : round-green : wrinkled-green pea seeds.
What does the letter F stand for in F1 generation?
Gregor Mendel. In basic terminology, the F1 generation is the first generation of offspring produced by a set of parents. The ‘F’ in F1 stands for ‘
filial
. ‘ So in short, F1 means ‘first filial generation’.
What is the probability that an offspring will have wrinkled seeds?
What is the probability tha the offspring will have wrinkled seeds. There is
a 50 % chance
that it could be a wrinkled seed. Genotype is the organisms genetic makeup or allele combinations. Phenotype is the physical apperance or visible traits.
How do two purple flowers produce white flower offspring?
In the mid-1800s Mendel crossed pea plants and studied their offspring. … In pea plants, purebred purple flowers have a genotype with two purple alleles, which produces a phenotype of purple petals. Purebred white flowers have a genotype of two white alleles, which displays the white phenotype.
What is the genotype of white flower?
You know that the
genotype rr
gives white flowers, and this happens in one combination, so 1/4 of the offspring will have white flowers.
What percentage of the plants would have purple flowers?
Checking the probability of fusion between the gametes produced by two plants crossed using Punnet Square method, it is seen that
75%
plants will have at least one dominant allele (P) and thus will bear purple flowers.
Which color flower is the recessive gene?
An example of a dominant trait is the violet-colored flower trait. For this same characteristic (flower color),
white-colored flowers
are a recessive trait.
What genotype would a white flower have?
When ever the R gene is present in the genotype of a plant, the flower color is always red. The mutant form of this gene, which is recessive, is often written r. Plants with the genotype RR or Rr have red flowers. Plants with the
genotype rr
have white flowers.
What percentage of the offspring will have purple flowers?
Do you know where each letter (allele) in all four cells comes from? Two pea plants, both heterozygous for flower color, are crossed. The offspring will show the dominant purple coloration in a 3:1 ratio. Or, about
75%
of the offspring will be purple.
When red and white flowers are crossed pink flowers are produced?
Explanation:
Incomplete dominance
is an example of a non-mendelian trait (doesn’t follow the genetic rules established by Gregor Mendel). When two parents mate and produce offspring, the offspring is a blend of the two parents. So, a red flower and a white flower would make a pink flower.
What is the genotype of pure breeding white plants?
When a pure-bred colored flower plant is cross-fertilized with a pure-bred white flower plant, all the F1 plants have colored flowers. Colored is the dominant phenotype. The genotype of the F1 plants is
Cc
. These F1 plants are: homozygous for the colored flower allele.
When Mendel crossed a plant with purple flowers with a plant with white flowers how many of the first generation F1 were white?
Mendel’s Results
Mendel noted the ratio of white flowered plants to purple-flowered plants was
about 3:1
. That is, for every three purple-flowered plants, there was one white flowered plant.
When Mendel crossed a purple flowered plant with a white flowered plant the F2 generation had?
When Mendel cross-pollinated purple- and white-flowered parent plants, what did he observe? The F2 generation was
75% purple-flowered plants and 25% white-flowered plants
.
Is PP genotype or phenotype?
There are three available genotypes, PP (
homozygous dominant
), Pp (heterozygous), and pp (homozygous recessive). All three have different genotypes but the first two have the same phenotype (purple) as distinct from the third (white).
