For pea-plants, the alleles at a single genetic locus determine the flower color. We will label the alleles R and r, and suppose that plants with two R alleles (genotype RR) have red flowers, those with two r alleles (genotype rr) have white flowers, and those with one of each (genotype Rr) have pink flowers.
How many alleles are there for the characteristic of flower color?
Humans are diploid organisms, which means that they have two alleles at each genetic position, or locus, with one allele inherited from each parent. Each pair of alleles represents the genotype of a specific gene. For example, in sweet pea plants, the gene for flower color has two alleles.
Which is the best example of an allele?
An example of an allele is the gene that determines hair color. Either of a pair of genes located at the same position on both members of a pair of chromosomes and conveying characters that are inherited in accordance with Mendelian law. Any of the possible forms in which a gene for a specific trait can occur.
What are the 7 characteristics of pea plants?
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 pairs of alleles determine?
The pair of alleles present on an individual’s chromosomes dictates what eye color will be expressed.
What are the 3 types of genotypes?
There are three types of genotypes: homozygous dominant, homozygous recessive, and hetrozygous.
Is flower petal color inherited or acquired?
When studying the inheritance of flower color, one must focus on the inheritance of the individual pigments since flower color is not inherited as such. … According to the continuous range of anthocyanidin concentrations in the population, the different anthocyanidin pigments seem to inherit quantitatively.
Is flower color determined by one gene?
After many more experiments cross-breeding further generations of flowers, Mendel concluded that the color of the pea flowers was determined by a single locus or gene. … So, a purple flower could carry an allele for being white, but if it also carries an allele for being purple, it will be purple.
Are snapdragon flowers colored?
Snapdragons are tall plants, and flower in a range of colors. In Spain, where snapdragons grow wild, these flower colors show a remarkable pattern: areas of magenta and yellow blooming flowers are separated by just a two kilometer long stretch in which flower colors mix.