Mendel concluded that pea traits like flower color were determined by separate units. From the results, Mendel proved that all traits do not blend. For instance, purple flowers mixed with white
flowers did not produce pink flowers
.
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.
Could two plants with purple flowers produce a plant with white flowers?
Can two plants with purple flowers produce offspring with white flowers?
Yes
, if both parents are heterozygous for the trait.
When a purple Colour flowered plant was crossed with a white Colour flowered plant the progeny in the first filial generation were all purple if the purple Colour flowered plants are now self pollinated what would be the nature and ratio of the progeny in the next generation explain the cross?
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).
When Mendel crossed a true-breeding purple plant with a true-breeding white plant it resulted in offspring's that were?
What was the result when Mendel crossed true-breeding purple flowers with white flowers?
All the offspring were purple
.
What came out when crossed true or pure breeding plants purple flowers and white flowers?
Figure 2. In one of his experiments on inheritance patterns, Mendel crossed plants that were true-breeding for violet flower color with plants true-breeding for white flower color (the P generation). The resulting
hybrids
in the F1 generation all had violet flowers.
What was Mendel's first conclusion?
Character Traits Exist in Pairs that Segregate at Meiosis
This is the basis of Mendel's First Law, also called The
Law of Equal Segregation
, which states: during gamete formation, the two alleles at a gene locus segregate from each other; each gamete has an equal probability of containing either allele.
When crossing purple flower plants Why would some of the offspring have white flowers?
Explanation: Let us consider a cross between two plants heterozygous for purple flowers. Each plant will produce two types of gametes, i.e. 50% gametes carrying (P) allele and 50 % carrying (p) allele. These
plants will bear white flowers
.
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
.
What is the probability of the plants with 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. Only 25% plants will have recessive allele in homozygous state (pp).
Are purple flowers dominant or recessive?
| 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 was the outcome of the first generation cross?
The F1 generation results from
cross-pollination of two parent (P) plants, and contained all purple flowers
. The F2 generation results from self-pollination of F1 plants, and contained 75% purple flowers and 25% white flowers. This type of experiment is known as a monohybrid cross.
Why did the F1 generation showed all flowers to be purple rather than a mix of white and purple flowers?
Mendel discovered that by crossing true-breeding white flower and true-breeding purple flower plants, the result was
a hybrid offspring
. Rather than being a mix of the two colors, the offspring was purple flowered. … The resulting hybrids in the F1 generation all had violet flowers.
When Gregor Mendel crossed pure breeding purple flowers with pure breeding white flowers What did he notice in the F1 offspring?
When Mendel crossed a true-breeding purple-flowered
pea plant
with a true-breeding white-flowered pea plant, he observed that all of the F1 offspring had purple flowers. When these F1 plants were selfed, he found 3/4 were purple and 1/4 were white.
What Did Mendel's first cross show?
In his first experiment, Mendel
cross-pollinated two true-breeding plants of contrasting traits
, such as purple and white flowered plants. The true-breeding parent plants are referred to as the P generation (parental generation).
When Mendel crossed a true-breeding plant with purple flowers and a true-breeding plant with white flowers all off spring had purple flowers This is because white flowers are?
Mendel crossed a true-breeding plant with round seeds and a true-breeding plant with wrinkled seeds. Which was true of every offspring of this cross? They would be all purple because
purple is the dominant trait and it blocks out the white recessive trait
.
