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POLYGENIC
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∙ 13y ago
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Traits that are due to what are considered to be acquired traits?
disease, injuries, and nutrients.
How is a trait determined?
Genetic traits are determined based on the genes an individual inherits from his parents. All an individual's genes determines his genotype, while factors such as dominance and recessiveness determine phenotype.
What is a palindrome for a part of the human body?
Both the X and the Y chromosome carry multiple palindromes, with the Y's contributing up to 30% of the total genetic material. This is due to the Y, having no other chromosome to swap with, needs to be able to swap with itself.
What new science did Gregor Mendel establish and how?
He is considered the father of genetics. This was due to his work with pea plants in his garden. He noticed that certain traits were inherited and took notes on what he found.
How can variations in DNA lead to the inheritance of different traits?
A different ordering to the letters (of the bases G, C, T and A) encodes different proteins as the end result.
What are the characteristics of polygenic traits?
Polygenic means that multiple genes created the same trait. The skin color gene is polygenic because multiple genes will give you the same trait.
Which part of the kidney has a lined appearance due to multiple collecting ducts extending through it?
medulla
Traits that are due to are considered to be acquired traits.?
disease, injuries, and nutrients.
Traits that are due to what are considered to be acquired traits?
disease, injuries, and nutrients.
Why does linkage between loci tend to decrease the amount of variability among offspring compared to the case where loci are unlinked?
A loci is a certain place on a chromosome like where a certain gene may exist. When two genes are on the same chromosome they are said to be "linked genes". This means that when certain traits are passed on they tend to get passed on together. As an example lets pretend that the genes for eye color and hair color are linked. Humans have two copies of every gene (except for sex-linked genes in males but this is an exception and another question altogether), one copy from their mother and one from their father. Let's simplify things a bit and think of the eye color trait and the hair color trait to be determined by a single gene (things are of course more complicated than this but it makes for a better example). A mother has a chromosome for black hair and black eyes and a chromosome for yellow hair and yellow eyes. When she has a child one of either of the chromosomes will go to the child and since the genes are linked then that means they will either have black hair/eyes or yellow hair/eyes (let's leave the father out of this for now and just assume whatever traits he passes on are recessive to either the black or yellow traits). They will not be able to have a combination of the two since the traits are passed on a single chromosome (this is not exactly true, but let's make life simpler and go over this at the end). If the loci were unlinked by being on a separate chromosome then the traits would be passed separately and you would be able to get children that have black eyes/hair, black eyes and yellow hair, yellow hair and black eyes, and yellow eyes/hair. Now in real life you probably would see a mixture of those traits (well if there were such things as yellow or black eyes) due to something known as chromosomal linkage. This is just when some of the DNA on a chromosome gets transfered to the other chromosome when they cross over before meiosis. You would still see black eyes/hair and yellow eyes/hair predominately among the children but depending on how close the genes are on the chromosome this will be much more likely than any of the mixed traits. So linked loci decrease the variability in offspring by only allowing two phenotypes for two different traits. Unlinked loci however will show offspring with four different phenotypes for two different traits.
What is trans heterozygous?
Trans heterozygous is a diploid organism that is heterozygous but it has two different loci(genes). They each have one natural allele and allele that is different from the natural allele due to a mutation.
111 prime or composite?
111 is a multiple of 3. Due to this, 111 is not prime and IS composite.
Why do plants from seeds not always inherit their parents traits?
Due to recombination and mutation
What variations do natural selection depend on?
They depend on natural variation in traits due to mutation.
What are the negative traits of today's youth?
Some negative traits of today's youth may include increased screen time leading to less face-to-face social interaction, a sense of entitlement due to instant gratification from technology, and a lack of resilience in the face of challenges due to a culture of overprotection.
How do you get traits so you will not be able to drown on the sims 3?
If your Sim is stuck in a pool with no way out, your Sim will die eventually due to fatigue. No traits can cause your Sim not to die.
In most microwave communication link rain drop attenuation is caused due to?
Due to multiple reflections
