A normal curve. A Bell curve.
Stabilizing selection would result in a graph showing a peak at the intermediate phenotype, with fewer individuals at the extreme phenotypes. This is because individuals with intermediate phenotypes are favored, leading to the reduction of extreme phenotypes in the population over time.
The recessive trait phenotype disappears in a one-trait test cross in the F1 generation. This phenotype can reappear in the F2 generation.
The genotype ratio is 1:2:1 (1 homozygous dominant, 2 heterozygous, 1 homozygous recessive) and the phenotype ratio is 3:1 (3 individuals showing the dominant trait, 1 individual showing the recessive trait).
A karyotype is a visual representation of an individual's chromosomes, showing their number and structure, while a phenotype refers to the observable physical, physiological, and behavioral characteristics of an organism resulting from the interaction of its genotype with the environment. In other words, karyotype is related to genetic makeup, while phenotype is related to physical traits.
Here is a diagram showing the process of natural selection: https://bioteaching.files.wordpress.com/2012/03/img1.jpg
The Lorenz curve has a major disadvantage of not showing the distributions exact value. It is also makes it difficult to compare different data sets.
Dominant genes. Dominant genes are always expressed in an organism's phenotype when present, masking the expression of recessive genes.
If 50% of the offspring show the dominant phenotype and 50% show the recessive phenotype, it is likely that one parent is heterozygous (Aa) for the trait and the other parent is homozygous recessive (aa). This would result in a 1:1 ratio of offspring showing each phenotype.
To determine the genotype of an individual showing the dominant phenotype, you would cross it with a homozygous recessive individual. This would help reveal whether the dominant phenotype individual is homozygous dominant or heterozygous for the trait.
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NO, because a dominant phenotype could either be homozygous or a heterozygous.so unless you are sure about the genotype of parents we can't determine it...but we can determine the genotype of a person showing reccessive phenotype, as a recessive trait always expresses itself in a homozygous condition..Read more: Is_it_possible_to_determine_the_genotype_of_a_person_showing_a_dominant_phenotype
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