Can the same trait arise from different genetic changes? Mutations could arise in the same gene and give rise to the same trait because many nucleotides contribute to controlling the expression of a gene.
Mutations in a different gene could also give rise to the same trait
.
Can genetic traits change?
Scientists have done all of these and more. They can add or take away genes, or change how the ones that are there already work.
Changing a gene can change a trait because each gene is really just the instructions for a specific trait
. Traits can be things you see like the color of a rice grain or the shape of a leaf.
Can people have the same genetic traits?
Genes have different versions called alleles.
If each parent contributes the same allele for a particular trait, it is homozygous.
Key Takeaways: Genetic Variation
Genetic variation refers to differences in the genetic makeup of individuals in a population
. Genetic variation is necessary in natural selection. In natural selection, organisms with environmentally selected traits are better able to adapt to the environment and pass on their genes.
What changes genes which can change traits?
Genetic variations
can arise from gene variants (also called mutations) or from a normal process in which genetic material is rearranged as a cell is getting ready to divide (known as genetic recombination). Genetic variations that alter gene activity or protein function can introduce different traits in an organism.
Is it possible to find the same gene in two different kinds of organisms but not find the protein that is produced from that gene?
Is it possible to find the same gene in two different kinds of organisms but not find the protein that is produced from that gene?
Yes, this phenomenon is made possible by latent genes, or genes in an unexpressed state.
Can you change your genes naturally?
Surprisingly, recent and ongoing research suggests that
positive behavioral and lifestyle changes can actually affect you on a genetic level
. This might sound crazy considering we are all born with a fixed genome, but our genes can be altered depending on their activity level.
Is a difference in the same trait?
| Gene Allele | Definition A gene is a portion of DNA that determines a certain trait. An allele is a specific form of a gene. |
|---|
Do you think that anyone in your class has all the same genetic traits that you have?
No. Each person has a unique combination of many genetic traits passed on to them by their parents
. (Identical twins, however, do share all of their genetic traits.)
Does each person in a family have the same traits?
There are no differences in traits between parents and offspring or among siblings
. Traits, such as your hair or eye color, are determined by the proteins made by ribosomes in your body. There are two genes that decide each of your traits, and those two genes are always exactly alike.
Why do some traits of the same species vary?
Genetic variation within a species can result from a few different sources.
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation
. Another source is gene flow, or the movement of genes between different groups of organisms.
Why do traits vary from one person to another?
The variation and distribution of traits in a population
depend on genetic and environmental factors
. Genetic variation can result from mutations caused by environmental factors or errors in DNA replication, or from chromosomes swapping sections during meiosis.
Why do offspring from the same parents usually have a different set of traits?
The answer has to do with the fact that
each parent actually has two different sets of genes
. And that each parent passes only half of their genes to their child. And that the half that gets passed down is random. All of this together ensures that each child ends up with a different, unique set of genes.
How common are genetic mutations?
One in five
‘healthy’ adults may carry disease-related genetic mutations.
How do genes control traits?
The trait is controlled by the genes, which produce a particular protein
. Genes are segments of DNA that carry information that is used to make RNA, which is then used to make protein. Each gene has two alleles, which tell the cell how to generate protein for trait expression.
Are genetic mutations avoidable?
To avoid mutations, we need to
limit exposure to these chemicals by using protective equipment, like masks and gloves, when working with them
. Once these chemicals are no longer being used, they should be properly disposed of (see Table 1).
Can different genes code for the same protein?
Scientists have long known that
it’s possible for one gene to produce slightly different forms of the same protein by skipping or including certain sequences from the messenger RNA
.
What species in the blast result has the most similar gene sequence to the gene of interest?
Drosophila melanogaster shaker (fruit fly)
has the most similar gene sequence to the gene of interest. 2. The species is located within the insect clade on the cladogram.
How can a cell produce two different mRNAs from the same gene?
Gene Splicing
Introduction
Gene splicing is an important source of protein diversity. During a typical gene splicing event, the pre-mRNA transcribed from one gene can lead to different mature mRNA molecules that generate multiple functional proteins.
Can your DNA ever change?
Our DNA changes as we age
. Some of these changes are epigenetic—they modify DNA without altering the genetic sequence itself. Epigenetic changes affect how genes are turned on and off, or expressed, and thus help regulate how cells in different parts of the body use the same genetic code.
Can exercise Change Your DNA?
The study was published in the peer-reviewed scientific journal Cell Metabolism. Media headlines claiming that 20 minutes of exercise changes your DNA oversimplify the research and its conclusions.
Exercise did not change people’s underlying DNA code or genetics
.
Is there a lazy gene?
Dopamine is a neurotransmitter associated with physical pleasure and reward.
The disruption in this gene appears to make affected mice “lazy”
– they quickly developed symptoms associated with metabolic syndrome in humans (a series of symptoms linked to obesity and inactivity).
Is trait same as allele?
These different characteristics of a gene that are produced by its alleles are collectively known as a variation. The main difference between allele and trait is that
an allele is an alternative form of a particular gene whereas a trait is the character that is determined by the allele
.
The traits of a living thing depend on the complex mixture of interacting components inside it. Proteins do much of the chemical work inside cells, so they largely determine what those traits are. But
those proteins owe their existence to the DNA
(deoxyribonucleic acid), so that is where we must look for the answer.
Are the different forms of a gene for any given trait?
Alleles are all the forms of a gene for any given trait
. There are usually two allele possibilities for every trait. For example: B and b are both alleles for the trait of hair color. Since genotype is the genetic make-up, phenotype is the physical result of a gene combination – what can be observed.
Is a difference in the same trait and is why siblings don’t look exactly alike?
Siblings get their genes from the same parents, but brothers and sisters don’t look exactly alike because
everyone has two copies of most of their genes and these copies are different
.
Is human behavior genetic or learned?
Human behavior is subject to genetic variations
. The ways in which individuals differ in their intellectual abilities, personalities, and mental health are, to a large extent, functions of their inherited genetic predispositions.
Can you change DNA from male to female?
Genetics overall cannot be changed (so far, at least)
Sex chromosomes
, in particular, determine whether someone will have female or male body parts. As you can see in the image below, these are chromosomes found in a typical person. We each have 23 pairs. The last pair are known as the sex chromosomes.
Is it true that there are two genes that decide each of your traits and those two genes are always exactly alike?
Why do I have freckles but my siblings don t?
So unless you’ve been living in a cave your whole life, you must have a different set of genes than your other relatives do. Your parents, aunts, uncles, and brother have freckles because they carry a gene for them.
You don’t have freckles because you don’t have this particular gene
.
How can two siblings be so different?
Q: Why are siblings so different? First of all,
genetics can account for sibling differences
. Siblings usually only share 50 percent of the DNA passed down from their parents. Second of all, even if siblings attend the same school, they may hang out in different crowds, which in turn influences their personality.
Why do traits vary and why do they vary even between parents and offspring and among siblings?
What is genetic variation examples?
Genetic variation results in different forms, or alleles
?
, of genes. For example,
if we look at eye colour, people with blue eyes have one allele of the gene for eye colour, whereas people with brown eyes will have a different allele of the gene
.
What is genetic variations?
Genetic variation is
the difference in DNA among individuals or the differences between populations
. The multiple sources of genetic variation include mutation and genetic recombination.
Why do people have different genetic traits?
It’s in Your Genes.
Some traits are controlled by genes passed from parent to child, others are acquired through learning but
most are influenced by a combination of genes and environmental factors
.
Are personality traits genetic?
Scientists estimate that
20 to 60 percent of temperament is determined by genetics
. Temperament, however, does not have a clear pattern of inheritance and there are not specific genes that confer specific temperamental traits.
