Why did Mendel use pea plants?
To study genetics, Mendel chose to work with pea plants because they have easily identifiable traits (Figure below). For example, pea plants are either tall or short, which is an easy trait to observe. Mendel also used pea plants because they can either self-pollinate or be cross-pollinated.
What are the 7 traits of pea plants that Mendel studied?
On the next screen, he reveals that there are seven different traits:
- Pea shape (round or wrinkled)
- Pea color (green or yellow)
- Pod shape (constricted or inflated)
- Pod color (green or yellow)
- Flower color (purple or white)
- Plant size (tall or dwarf)
- Position of flowers (axial or terminal)
What was the most significant conclusion that Gregor Mendel drew from his experiments with the pea plants?
) What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants? Traits are inherited in discrete units, and are not the results of “blending.”
What 3 conclusions were made after Mendel’s experiment?
—and, after analyzing his results, reached two of his most important conclusions: the Law of Segregation, which established that there are dominant and recessive traits passed on randomly from parents to offspring (and provided an alternative to blending inheritance, the dominant theory of the time), and the Law of …
What conclusion was derived from Mendel’s experiment of Monohybrid cross?
In monohybrid cross experiment the phenotype ratio for F2 generation is 3:1. Mendel’s Conclusions for Monohybrid Cross: Characters such as a height of a stem, a color of seed etc. are inherited separately as discrete particles or unit.
Why did all of the F1 offspring?
Why did the F1 offspring of Mendel’s classic pea cross always look like one of the two parental varieties? One phenotype was completely dominant over another. traits can be dominant or recessive, and the recessive traits were obscured by the dominant ones in the F1.
What was the outcome of the F1 generation in Mendel’s first experiment?
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.
What do two plants of F1 generation look like?
This cross involves crossing between TTPP and ttpp plants hence gametes with alleles TP and tp resulting in all TtPp offspring. As tallness and purple colour are dominant characters, all the offspring of F1 generation will look tall with purple colour of flowers. Was this answer helpful?
What is the best evidence to prove that Irene was heterozygous for hemophilia?
The best evidence to prove that Irene was heterozygous for hemophilia would be that Alice carried the recessive allele.
What should Paolo conclude?
What should Paolo conclude? Inheritance alone may not account for thick leg muscles.
Which allele combination represents a female who has a heterozygous?
Answer: The correct answer would be XRXr. In humans, X and Y are the sex chromosomes which determine the gender of the person. The males are heterozygous, that is, they are XY whereas the females are homozygous for the X chromosome, that is, XX.
What is the probability of having offspring that have wrinkled seeds and yellow seed color?
0%
What is the genotype of a plant with wrinkled seeds?
A true-breeding plant with round seeds would have a genotype of (RR) for that trait and a true-breeding plant with wrinkled seeds would have a genotype of (rr). When allowed to self-pollinate, the true-breeding plant with round seeds would produce only progeny with round seeds.
What does true breeding mean in pea plants?
A true breeding is a kind of breeding wherein the parents would produce offspring that would carry the same phenotype. This means that the parents are homozygous for every trait. With plants, true breeding occurs when plants produce only offspring of the same variety when they self-pollinate.
Which is dominant round or wrinkled seed shape?
Since round seed shape is dominant over wrinkled seed shape and yellow cotyledon is dominant over green cotyledon so RRYY individuals is round yellow and rryy is wrinkled green.
What is the percentage of a homozygous dominant offspring?
| PARENT GENOTYPES | OFFSPRING PHENOTYPES |
|---|---|
| pure (homozygous) dominant x anything | 100% of offspring with dominant trait |
| hybrid x homozygous recessive | 50% dominant trait, 50% recessive trait |
| hybrid x hybrid | 75% with dominant trait & 25% with recessive trait |
| homozygous recessive x homozygous recessive | 100% recessive trait |
Will the offspring be homozygous or heterozygous?
When true-breeding, or homozygous, individuals that differ for a certain trait are crossed, all of the offspring will be heterozygous for that trait. If the traits are inherited as dominant and recessive, the F1 offspring will all exhibit the same phenotype as the parent homozygous for the dominant trait.
What is the relationship between homozygous and heterozygous?
Homozygous and Heterozygous Basics The difference between these traits is: Homozygous traits have two copies of the same allele. Heterozygous traits have one dominant allele and one recessive allele.