0
What is the phenotype in the F1 generation that disappears in a one trait test cross?
Wiki User
∙ 11y ago
The recessive trait phenotype disappears in a one-trait test cross in the F1 generation. This phenotype can reappear in the F2 generation.
Flavio Mitchell
Add your answer:
Earn +20 pts
Which type of genetic trait appears in every generation of offspring?
the dominant trait
Explain Mendel's law of independent?
Mendel's Law - 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 next generation. Offspring that are hybrid for a trait will have only the dominant trait in the phenotype."
What are an individuals expressed traits called?
genotype
What is the outward aperance of a trait of a phenotype called?
The outward appearance is called the phenotype
What is the physical expression of trait called?
Phenotype
Which type of genetic trait appears in every generation of offspring?
the dominant trait
A trait in the f1 generation that is different from the parental phenotype is known as?
A trait in the f1 generation that is different than that of the parental phenotype is known as a hybrid. This occurs as a result of two distinctly different parents producing a phenotype that is uniform and new.
Explain Mendel's law of independent?
Mendel's Law - 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 next generation. Offspring that are hybrid for a trait will have only the dominant trait in the phenotype."
What phenotypes are present in F1 generation?
The phenotypes present in the F1 generation depend on the phenotypes of the parental generation (and the environment). The F1 generation will display the dominant trait(s). For example, if T is tall and t is short, in the cross TT X tt the F1 generation will have the phenotype corresponding to the T allele (tall).
What did Mendel do in his second law?
The second Mendelian Law is the Law of Segregation. It states that in a cross the parental traits do not merge in the first offspring generation (ie. the recessive, "weaker" trait does not disappear for good) but instead appear unchanged in the second offspring generation. For example, if you cross homozygous dwarf pea plants to homozygous tall, all members of the first offspring generation will be tall. This makes it seem as if the dwarf trait disappears, but it does not. If you inbreed the first offspring generation, you get 25% dwarf plants in the second offspring generation. So the "lost" trait reappears.
What is the name of the cross that involves the mating of an unknown dominant phenotype plant with a homozygous recessive plant for the same trait?
Test Cross
To determine the genotype of an individual that shows the dominant phenotype you would cross that individual with one that is?
To determine the genotype of an individual that shows the dominant phenotype you would cross that individual with one that is homozygous recessive. A monohybrid cross of two individuals that are heterozygous for a trait exhibiting complete dominance would probably result in a phenotype ratio is 3 dominant 1 recessive.
What is physical trait of an organism is called?
phenotype.
When do you first learn which trait is dominant?
when observing the F1 generation of a monohybrid cross
What are an individuals expressed traits called?
genotype
How can a person genotype for a trait be determined from his or her phenotype for the trait?
hk.bjhjb
How can a person's genotype for a trait be determined from his or her phenotype for the trait?
hk.bjhjb
