0
In incomplete dominance genotypes can be expected to appear in a ratio of?
Ashleya92
Looking at heterozygous parents (F1) who share the same dominant trait, e.g. Straight tail.
Crossing two heterozygous parents from the F1 generation results in an F2 generation that produces a 75% chance for the appearance of the dominant phenotype, of which two-thirds are heterozygous, and a 25% chance for the appearance of the recessive phenotype, giving the ratio 3;1.
Inheritance pattern of dominant and recessive phenotypes when each parent is homozygous for either the dominant or recessive trait. All members of the F1generation are heterozygous and share the same dominant phenotype, while the F2generation exhibits a 3:1 ratio of dominant to recessive phenotypes.
Wiki User
∙ 11y ago
Wiki User
∙ 12y ago1:2:1
Add your answer:
Earn +20 pts
What is the type of inheritance that would suggest the concept of blending?
Blending inheritance is inheritance in which contrasting parental characters appear as a blend in the offspring.
What is only way a recessive trait will be expressed?
if its 2 recessive allels together.
Which inheritance pattern results when parents are crossed for pure traits and the resulting offspring have traits that appear to blend?
co-dominance
Why do traits that are controlled by genes on the same chromosome not always appear in the expected ratio in offspring?
I think this has something to do with "crossing over," but I do not remember the details. All I remember is that the allelle of one chromosome may overlap and switch with the allelle of another chromosome, which results in unexpected ratios of the genotypes and phenotypes of traits represented by genes that would normally be found on the same chromosome.
How do you explain Mendel's Law of Dominance?
Mendel's Law of Dominance - The first law of Mendel states that "In a cross of parents that are pure for contrasting traits, only one form of the trait will appear in the progency" Mendel's Law of Dominance-When two pure breeding organisms of contrasting characters are crossed,only one character of the pair appears in the F1 generation.this is known as the dominant character(example:tallness).the other unexpressed or hidden character is known as the recessive character(example:dwarfness).
What happens with incomplete dominance?
The two traits will appear to blend. example: Red Flower plus White Flower= Pink Flower
What Traits that appear to blend are the result of?
Incomplete dominance (i.e. non of the two alleles are dominant and their effects blend to give the phenotype)
a red bird and a blue bird mate and their offspring are purple in color. what type of inheritance is this?
Incomplete Dominance
What is the type of inheritance that would suggest the concept of blending?
Blending inheritance is inheritance in which contrasting parental characters appear as a blend in the offspring.
What is the difference between incomplete dominance and codominance?
co dominance is when there is no dominant or reccessive traits just lie in in incomplete dominance the diffrence is in co dominance the are mkore chromosomes
What is the results when two different alleles both appear in the phenotype?
When one allele for a particular trait masks or overrides another allele for a trait, it is called dominance. The allele that is masked is called the recessive allele. The allele that is dominant will determine the phenotype.
How does codominance work and why does it happen?
Incomplete dominance occurs when a homozygous genotype produces an intermediate, or middle phase before the result. This intermediate is the heterozygous' phenotype.
What is the fraction of genotypes that appear in offspring?
Genotypic Ratio. Source- My Biology Book
What is only way a recessive trait will be expressed?
if its 2 recessive allels together.
What is the stronger gene for a trait always shows up in the offspring?
Yes, the dominant allele, if present, always overpowers the recessive one. There are exceptions though, when there are two different dominant alleles. These show in the form of co-dominance (two dominant traits that blend) and incomplete dominance (two dominant traits that both appear).
What is the expected sum ofthe numbers that appear when three fair dice are rolled?
The expected value is 10.5
When two different alleles appear on on gene but only one of those alleles appears in the phenotype is demonstrated?
complete dominance
