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How did Mendel know the the tall pea plants in the first generation had a hidden factor for shortness?
By "test cross" you can know whether it homozygous dominant or heterozygous dominant...in homozygous both alleles code for the dominant trait, in heterozygous one allele is recessive (what you called a "hidden factor"). To perform the test cross, cross a homozygous recessive with the first generation.
Lets suppose tall pea tree in the first generation is hetrozygous dominant (Xx) and has alleles X (dominant) and x (recessive). When we cross it with homozygous recessive (xx)
X x
x :Xx xx
x :Xx xx
we get half offspring showing dominant trait (Xx) and half showing recessive (xx).
If the first generation was homozygous (which is not possible) the result would be
X X
x: Xx Xx
x: Xx Xx
all the offspring showing dominant trait and it doesn't really happen when we cross the first generation with homozygous recessive. It means that the genotype of first generation is heterozygous (has a hidden factor or a recessive allele x).
Note:You must know what the recessive and dominant allele means...In presence of a dominant allele, recessice character is not expressed but it is present is heterozygous. If both alleles are recessive (homozygous recessive) then the recessive trait is expressed. If both the alleles are dominant (homozygous dominant) obviusly the dominant trait is showed by the individual.
What else can I help you with?
What is a hidden port?
a hidden port is a port that is covered by a firewall
When was Hidden Passions created?
Hidden Passions was created in 2001.
When was The Hidden Hand created?
The Hidden Hand was created in 2002.
What are the names of the hidden villages?
The secret village in the fire country is the Hidden Leaf Village (Konohagakure).
What is the duration of The Hidden Fortress?
The duration of The Hidden Fortress is 2.32 hours.
How did Mendel learn traits caused by hidden factor in pea plants?
They appeared in first and second generation offspring I think.
In which generation were recessive traits hidden in all the plants in Mendel's experiment?
f2 generation
What generation showed hidden traits in all plants of Mendel's experiments?
The F2 generation showed hidden traits in all plants of Mendel's experiments. This generation resulted from crossing the hybrid F1 generation plants, allowing recessive traits to resurface and become visible in the offspring.
In which generation were recessive traits hidden in all the plants in Mendels experiments?
f2 generation
Contrast the offspring in the F1 generation to the offspring in the F2 generation What did the differences in the F1 and F2 offspring show Mendel?
They differed both in genotype and phenotype. Mendel's F1 generation were all heterozygous Tall. Where his F2 generation had genotype frequencies as follows: 1TT:2Tt:1tt and the phenotype frequency 3tall:1short This is assuming you are referring to his experiments using height as the factor. His other experiments had similar results just replace all the uppercase T's with the dominant allele and the lowercase t's with the recessive trait.
Mendel accounted for the observation that traits which had disappeared in the F1 generation reappeared in the F2 generation by proposing that?
Mendel proposed the concept of dominant and recessive traits, where recessive traits are masked in the F1 generation but can reappear in the F2 generation when two carriers of the recessive trait combine and show the trait. This is known as the Law of Segregation, where pairs of alleles separate during gamete formation, leading to the reemergence of hidden traits.
In which generation were recessive traits hidden in all plants in mendels experiment?
f2 generation
In what generation were recessive traits hidden in all the plants in Mandels and experiment?
F1 generation
What generation were recessive traits hidden in all the plants in Mandels and experiment?
F1 generation
In which generation were ressesive traits hidden in all the plants in mendels experiments?
f1 Generation
Which generation were recessive traits hidden in all the plants in mendels experiments?
F1 generation
In Mendel's experiment why did wrinkled seeds show up in the F2 generation even though they were not present in the F1 generation?
Wrinkled seeds are recessive The F1generation carried recessive alleles.
