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all flowers are purple
What else can I help you with?
When a trait seems to disappear or doesnt show up often?
Recessive Trait
What did Gregor Mendel call the traits that disappear in the first generation?
Gregor Mendel called the traits that disappear in the first generation recessive traits. These traits are not expressed in the offspring when there is a dominant trait present.
When a trait seems to disappear when two genes for the same trait are present?
recessive
A trait that seems to disappear when two different genes for the same trait are present?
dominant
A trait seems to disappear when two different genes for the same trait are present?
recessive
What trait seems to disappear hen two different genes for the same trait are present?
recessive
What traits seems to disappear when two different genes for same trait are present?
Recessive
Why did one of the characteristics for example dwarfness or white flower color disappear in the F1 generation of Mendal's crosses?
Since the F1 generation of crosses is a cross between two pure traits (for example, TT for tall and tt for short/dwarfness), the offspring of the pure parents all have the genotype of Tt: 100% of offspring will be tall. The dwarfness seems to "disappear" because the capital T is dominant, while the lowercase t (for shortness) is recessive. Dominant dominates a recessive trait, so only tallness appears and dwarfness seems to disappear. Additional Info: However, even though the dwarfness seems to "disappear" it is still in the genotype although it does not appear in the F1 generation. In the F2 generation, there will be a 25% chance of the offspring having the trait dwarfness, because the F1 generation is crossed (Tt x Tt).
The observed trait in the first generation?
Dominant trait
How can one trair disappear in one generation and then reappear in a later generation?
A trait can disappear in one generation due to a recessive gene being masked by dominant genes. When two carriers of the recessive gene have children, there is a 25% chance the trait will reappear in the next generation as the recessive gene is expressed. This is known as genetic recombination through Mendelian inheritance.
What pattern is apparent in pedigrees charting the inheritance of a recessive trait?
The person with the recessive trait seems to 'skip' a generation
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.
