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How does natural selection affect polygenic traits?
Polygenic traits occur because of genes and environment. There are usually two or more genes involved in these traits. It also takes into consideration where the organism lives, for example the fact that some hotter areas have a history of people with darker skin tones.
What are some causes of accident in the bedroom?
What are some causes of accidents in the dining room
Do some traits require more than one gene to be fully expressed?
Yes. There are some traits like skin color that are controlled by multiple genes within an individual. There is also a problem called nondisjunction that causes a gamete to wind up with two chromosomes instead of one. The offspring then has three chromosomes and three genes for each trait carried on that chromosome. (Nondisjunction of the 21st chromosome causes Down Syndrome, so someone with Down Syndrome has three genes for each trait on the 21st chromosome.)
What traits are shared all by protists?
All protists are eukaryotes, some are heterotrophic, some are autotrophic, almost all can move, and almost all are single celled. No, we need traits that ALL of them share, not just some or almost all.
What where some of Albert Einstein's traits good and bad?
Shy Smart, Humble, and he was a pacifist.
Why do some traits have so many different phenotypes?
Some traits have many different phenotypes because they are influenced by multiple genes and environmental factors. This can lead to a wide range of possible outcomes for a trait. Additionally, genetic variations and interactions can result in different expressions of a trait in individuals.
Why do some human traits show a large number of phenotypes?
i don't know but i think it is because of the recessive and dominate traits.
How can a wide range of phenotypes increase the chance that some individuals will survive in a changing environment?
by natural selection.
Why do some humans show a large variety of phenotype?
Usually, traits have a large variety of phenotypes because they have a large amount of genes.
Why do some human traits such as height and hair color show large number of phenotypes?
Because these are governed by quatitative or multiple genes
Why do some traits exhibit a large number of phenotype?
some human traits show a large number of phenotype because the traits are controlled by many genes. The genes act together as a group to produce a single trait
What can polygenic inheritance can explain?
Polygenic inheritance is a reason for some of the variety in human appearance. Eye color, hair color and skin color are all polygenic traits. That is why there are dozens of possible eye colors instead or just two or three. The mixing of alleles from multiple genes increases the number of possible phenotypes.
How did his Mendel's novel approach contribute to his success in describing how traits are inherited?
The garden pea has a few advantages for his experiments. It has a short generation time thus he can study many pea plants at once. Also their phenotypes are very distinct - which is a bonus since the whole experiment is to observe distinctive phenotypes - would be too vague and confusing if the traits are too close alike. The phenotypes that are distinctive are by color, the growth, round/wrinkled peas etc. Mendel's experiment basically fathered genetics. He knew nothing about alleles and DNA and what not yet he was still able to show how traits are inherited. He obviously proved that traits come from alleles - that traits don't just mix and are forever lost because some traits can be recovered (Homozygous x homozygous will always give homozygous. However Heterozygous Tt x Tt can recover the recessive trait, tt).
How did his mendels novel approach contribute to his success in describing how traits are inherited?
The garden pea has a few advantages for his experiments. It has a short generation time thus he can study many pea plants at once. Also their phenotypes are very distinct - which is a bonus since the whole experiment is to observe distinctive phenotypes - would be too vague and confusing if the traits are too close alike. The phenotypes that are distinctive are by color, the growth, round/wrinkled peas etc. Mendel's experiment basically fathered genetics. He knew nothing about alleles and DNA and what not yet he was still able to show how traits are inherited. He obviously proved that traits come from alleles - that traits don't just mix and are forever lost because some traits can be recovered (Homozygous x homozygous will always give homozygous. However Heterozygous Tt x Tt can recover the recessive trait, tt).
Why some phenotypes are more common in a population than others?
Phenotypes that are more advantageous for survival and reproduction in a given environment are more likely to be passed on to future generations, leading to their increased frequency in a population over time. This process is driven by natural selection, where individuals with beneficial traits have a higher chance of passing on their genes. Additionally, genetic drift, gene flow, and mutations can also influence the frequency of phenotypes in a population.
Why some phenotypes are the same and other phenotypes different?
because no one in this world has the same gene.They may have similar gene,but not the same
Are all phenotypic expression visible?
Phenotypes are observable, but this does not necessarily mean 'visible'. For example, biochemical properties and behaviour are both part of phenotype. A phenotype may involve producing a certain protein, but you cannot 'see' the protein (you might be able to do a test to find it).
