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Will an offspring show a recessive trait if only one of its parent has the gene for that trait?
A family tree is a great idea, but the science is based on probability. The
probability that a recessive trait will show up in a family is 25% if both
parents are carriers. In order for a recessive trait to show up in a person,
he/she must inherit a copy of the recessive trait from both parents. If one
parent is recessive, let's say "rr" and the other parent is a carrier, say
"Rr", the probability is 50%. If both parents are recessive, the probability
is 100% (rr x rr). If neither parent carries the trait the probability is 0%
(RR x RR). BUT, this only tells you what MIGHT happen. We all know that the
probability of having a boy is 50:50, but we all know families of all boys.
So it would be interesting to see if the probability works out in your
family. If you do a search on the web for "genetics" or "probability and
genetics" you will get plenty of hits.
vanhoeck
What else can I help you with?
What percentage of the offspring will most likely show the dominant trait?
More information is needed. The percent of offspring that will display the recessive trait from parents with Hh and HH will be different than the percent of offspring that will display the recessive trait from parents with hh and Hh.
If an animal with 2 dominant genes for a trait has offspring with an animal with 2 recessive genes for same trait their offspring can only have what?
Their offspring will have dominant genes. However, if these offspring have offspring with an amimal with recessive genes, the recessive genes will show up.
When can a recessive gene assert itself?
When a parent for example has one dominant and onee recessive e.g Fe and another parent is a carrier for it e.g ee this will make the gene produce a trait of the offspring having a 50% chance of being a carrier
How do you know if the recessive gene will be the recessive in the offspring?
If both parents carry a recessive gene for a particular trait, there is a 25% chance that their offspring will inherit two copies of the recessive gene and exhibit the corresponding trait. This can be determined through genetic Punnett square analysis to predict the probability of different genetic outcomes in offspring.
What trait that may not show when an animal carries it but which can be passed on to its offspring and perhaps show there is called what kind of trait?
A trait that may not be visibly expressed in an animal but can be passed on to its offspring is called a "recessive trait." This trait is only observable when an organism has two copies of the gene responsible for it, one from each parent.
What is the only way a recessive trait will be expressed?
Breed/use only organisms showing the recessive trait for starters. If one of the parents or progenitor lines show the dominant trait then don't use their offspring. If the offspring of one of the oranisims show the dominant trait then remove both the parent of this offspring and this offspring showing the dominant trait from your program.
In crossing a homozygous recessive with a heterozygote what is the chance of getting a homozygous recessive phenotype in the F1 generation?
1/2 or 50%. The homozygous recessive gentoype contains two recessive alleles for the gene for a trait. So the homozygous recessive individual can pass on only recessive alleles to an offspring. The heterozygous individual has one dominant and one recessive allele for the gene for a trait. So the heterozygous individual can pass on either a dominant or a recessive allele to an offspring. So if an offspring inherits a recessive allele from the heterozygous parent, along with the recessive allele from the homozygous recessive parent, it will have the homozygous recessive genotype and phenotype.
What is meant by recessive trait when discussing genetics?
When discussing genetics, recessive trait refers to the fact that the offspring of two parents must inherit two copies of a gene to expose the trait. This would mean that both parents must be carriers of said gene in order for their offspring to show a recessive trait.
What is a dominant gene and what is a recessive gene?
Recessive gene is one which is supressed and do not show their characteristics and dominant gene is one which show their characteristics for example if a father has brown hair and mother has black hairs and if their son has black hair then in this case gene which has characteristics of black is dominant and the other which has characteristics of brown colour is recessive
In order for a child to inherit a recessive trait both parents must be carriers of the recessive gene?
No. A recessive gene can be inherited from one parent, a dominant from another, or two alike dominants. (No such thing as two alike recessive, the gene with the furthest back dominant gene. Say a blonde little girl has a blonde hybrid mother and a brown hybrid father. She ended up getting brown recessive. Since both of her parents were hybrid, she only had a recessive hair color gene from one parent.
How do you identify a homozygous ressive genotype?
A homozygous recessive genotype can be identified when an individual has two copies of the recessive allele for a particular gene. This means that both alleles for that gene are the same and are both the recessive form. This genotype will typically show the recessive trait associated with that allele.
What is an example of recessive trait?
'Albinism' (being an albino, without skin pigmentation) is an example of a recessive trait. Specifically, it is an expressed recessive trait, because that person does not have the dominant gene at all, only two copies of a recessive gene. For a person to be an albino, his/her parents BOTH had to have the recessive gene and the offspring had to inherit THOSE TWO copies and can now only 'express' the recessive gene. There is no dominant gene to undo the albino trait. Side note: there is more than one form of albinism recognized in medical science, but all are examples of recessive traits. Another example of a recessive trait would be 'sickle-cell disease/anemia.'
