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A recessive trait reappears in the 2nd generation. The classic example of this would be Gregor Mendel's pea plant cross. He took 2 pea plants, one short and one tall, cut out some of their reproductive parts so they couldn't self pollinate, and crossed their pollen. However, instead of getting a medium sized plant, he got 4 tall plants. This generation is the first, or F1, generation. Where did the short trait go? Did it simply disappear? Or was it being masked? To find out, he let the F1 generation self-pollinate. Surprisingly, there were 3 tall and 1 short plants in the F2 generation. Although the short trait was recessive, it reappeared in the second generation.
What else can I help you with?
Which type of genetic trait appears in every generation of offspring?
A dominant genetic trait appears in every generation of offspring because only one copy of the dominant allele is needed for the trait to be expressed.
When a first generation plant self pollinates what is the ratio of dominate to recessive traits in the second generation plants?
When a first generation plant self pollinates, the ratio of dominant to recessive traits in the second generation plants is typically 3:1. This is based on Mendel's principle of segregation, which predicts that in a monohybrid cross, three plants will exhibit the dominant trait and one will exhibit the recessive trait.
The factor that always expresses itself in the first filial generation?
The dominant factor always expresses itself in the first filial generation, known as the F1 generation. This means it is the trait that is visible in the offspring when one parent has a dominant allele for a particular characteristic.
What is the phenotype in the F1 generation that disappears in a one trait test cross?
The recessive trait phenotype disappears in a one-trait test cross in the F1 generation. This phenotype can reappear in the F2 generation.
What is law of dominance and how do traits manifest if it is from a parent with this type of trait?
Mendel's law of dominance states that when two pure breeding organisms of contrasting traits (such as purple flower or white flower) are crossed, only one trait of the pair appears in the F1 generation. This is known as the dominant trait (purple), and the other unexpressed trait (white) is recessive.
Which type of genetic trait appears in every generation of offspring?
A dominant genetic trait appears in every generation of offspring because only one copy of the dominant allele is needed for the trait to be expressed.
A trait that appears or is expressed in the f1 generation is what?
A trait that appears or is expressed in the F1 generation is considered dominant. Dominant traits will manifest themselves in the offspring when at least one parent carries the dominant allele for that trait.
In mendels experiment a trait that always disappeared in the f1 generation but reappeared in the f2 generation was called the?
recessive trait
Will there be a second generation for the nook?
recessive trait
A trait which always appears when it is present is called what kind of trait?
A trait that always appears when it is present is called an obligate trait. This means that the trait is consistently expressed whenever the underlying genetic or environmental conditions are present.
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 kind of trait always appears in the offspring produced in Mendels first experiment?
Dominant
In which generation were recessive traits hidden in all the plants in Mendels experiments?
f2 generation
What is the term for when a trait skips a generation?
The term for when a trait skips a generation is called "recessive inheritance."
The trait that disappeared in the f1 generation?
reappears in some plants in the F2 generation
The observed trait in the first generation?
Dominant trait
If the F2 generation expressed a trait in a 3.1 ratio the F1 generation MUST be heterozyous for that trait?
True
