the tall trait was controlled by a dominant factor.
The tall Gene is dominant, the short Gene is recessive
The tall gene is dominant
Dominant. novanet :)
he established all the principles of modern genetics
yes he was. its true
genes
oh my goodness, you are in my class aren't you?
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.
he crossed two pure lines
he crossed two pure lines
he crossed two pure lines
In a typical Mendel experiment, Mendel took two purebreeding lines (the parental generation) and crossed them to produce the 1st filial generation and sometimes would self cross these to produce the 2nd filial 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).
Gregor Mendel used traditional manual methods such as cross-pollination and careful record-keeping for his pea plant experiments. He observed the patterns of inheritance by systematically breeding pea plants with specific traits over multiple generations. Mendel's experiments laid the foundation for modern genetics.
Gregor Mendel observed that traits in pea plants were passed down from generation to generation in predictable patterns. He discovered the principles of inheritance, including the idea that traits are determined by discrete units of inheritance, now known as genes. Mendel's work laid the foundation for the field of genetics.
All of the offspring had at least one dominant tall allele. All of the offspring in the F1 generation were heterozygous "Tt" meaning they each had one tall allele "T" and one short allele "t". It also suggest that one parent was homozygous tall TT and the other was homozygous short "tt."
100% percent of the plants expressed the dominate trait ........................................................................................ what do u get when u mix purple with purple you get 100% purple :) simple peace of cake !
he crossed two pure lines
Mendel crossed a pure-breeding round-seeded variety with a pure-breeding wrinkled-seeded one. All the peas produced in the second or hybrid generation were round.
Mendel's experiment showed that with other traits it showed a similar pattern and also that it resulted that this crossed the first generation. The dwarf height traits had seemed to disappear. He then let the first generation plants self pollinate.