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AA would be used to represent a homozygous dominant gene. Aa would be hybrid or Heterozygous. aa would be homzygous recessive implying that the person would only carry the trait instead of physically showing it. AA and Aa however, would express that genes trait within their characteristics.
What else can I help you with?
If smooth peas are dominant over wrinkled peas?
If smooth peas are dominant over wrinkled peas, it means that when a plant with one smooth pea allele and one wrinkled pea allele reproduces, all of its offspring will have smooth peas. This is because the dominant allele (smooth) masks the expression of the recessive allele (wrinkled) in the offspring's phenotype.
For sickle-cell disease assume S is the dominant allele and s the recessive allele Which genotypes are possible for offspring of a carrier (Ss) and a person who lacks the sickle-cell allele (SS)?
SS,Ss
WHAT IS THE PROBABLITY OF A HOMOZYGOUS RECESSIVE INDIVIDUAL (ss) producing a gamete with a dominat allele?
A homozygous recessive individual (ss) carries two copies of the recessive allele and does not possess a dominant allele. Therefore, when this individual produces gametes, all gametes will carry only the recessive allele (s). Consequently, the probability of a homozygous recessive individual producing a gamete with a dominant allele is 0%.
What is alleles for a tall pea plant?
If you mean one allele for short stems, then it would probably be something similar to Ss, where S is a tall stem allele and s is a short stem allele. The letters chosen to represent the alleles are not universally agreed on (there are far too many genes, let alone alleles, to name with only letters), so they are specified in each case by the geneticist. Also, make sure that the letters match each trait - s and S are the same letter for the same trait, the stems. For color, you would use another pair - say perhaps C for green peas, c for yellow peas, et cetera.
When a plant has Two recessive alleles for wrinkled seeds how would you write the symbols for its alleles?
well it depends on the letters that you are given, recessive alleles are ALWAYS lower case.An example answer would be: ss, where s would represent the recessive allele.
Why do we call some alleles dominant?
because it dominates the phenotype
If smooth peas are dominant over wrinkled peas the allele for smooth peas should be represented as?
The allele for smooth peas should be represented as "S" while the allele for wrinkled peas should be represented as "s", following the convention of using uppercase letters to represent dominant alleles and lowercase letters for recessive alleles.
If smooth peas are dominant over wrinkled peas?
If smooth peas are dominant over wrinkled peas, it means that when a plant with one smooth pea allele and one wrinkled pea allele reproduces, all of its offspring will have smooth peas. This is because the dominant allele (smooth) masks the expression of the recessive allele (wrinkled) in the offspring's phenotype.
For sickle-cell disease assume S is the dominant allele and s the recessive allele Which genotypes are possible for offspring of a carrier (Ss) and a person who lacks the sickle-cell allele (SS)?
SS,Ss
What is the genotype of a child if the mother is homozygous for the dominant trait and the father is homozygous for the recessive trait?
The dominant parent is most likely homozygous dominant, and the recessive parent has only the homozygous genotype. So the dominant parent can pass on only dominant alleles for this trait, and the recessive parent can pass on only recessive alleles for this trait. So all of the offspring would be heterozygous and have the dominant phenotype.
In dogs wire hair S is dominant to smooth s In a cross of a homozygous wire-haired dog with a smooth-haired dog what will be the phenotype of the F1 generation?
All the F1 will have wire hair.The reason:A homozygous wire-haired dog must be SS. It must have at least one S allele if it shows the dominant character, and "homozygous" means pure-breeding, so there is no other allele present.A smooth-haired dog must be ss. Any organism displaying a recessive trait must be homozygous, as a dominant allele would mask the recessive one.So the cross is:SS x ssand one parent must pass on the S gene, one the s. Therefore all the F1 must be Ss. Their phenotype is wire-haired, because they have a dominant allele, but they are all heterozygous, because they inherited a recessive gene from the smooth-haired parent.This cross demonstrates Mendel's First Law.
WHAT IS THE PROBABLITY OF A HOMOZYGOUS RECESSIVE INDIVIDUAL (ss) producing a gamete with a dominat allele?
A homozygous recessive individual (ss) carries two copies of the recessive allele and does not possess a dominant allele. Therefore, when this individual produces gametes, all gametes will carry only the recessive allele (s). Consequently, the probability of a homozygous recessive individual producing a gamete with a dominant allele is 0%.
What is the difference between dominant and recessive gene?
There are no such things as dominant and recessive genes. There are only dominant and recessive alleles. Dominant alleles are parts of a gene that present its features over the recessive allele, which is the one that is always masked by the dominant allele. The recessive allele's trait only shows if both of the alleles in a trait are recessive.
What is alleles for a tall pea plant?
If you mean one allele for short stems, then it would probably be something similar to Ss, where S is a tall stem allele and s is a short stem allele. The letters chosen to represent the alleles are not universally agreed on (there are far too many genes, let alone alleles, to name with only letters), so they are specified in each case by the geneticist. Also, make sure that the letters match each trait - s and S are the same letter for the same trait, the stems. For color, you would use another pair - say perhaps C for green peas, c for yellow peas, et cetera.
What is a homozigouse?
It's spelt homozygous, which may explain the difficulty when you tried to look it up haha. I don't know your level of knowledge, but it refers to genetics. There are two alleles (allele = different type of a gene) at each locus (locus = physical location of a gene on a chromosome) on a chromosome. If these alleles are the same, they are considered homozygous. I'll give an example: we have a snake that either has spots or it doesn't, and spots is the dominant phenotype (phenotype = physically expressed trait). If it has spots, then it has the S allele, and if it doesn't have spots, it has the s allele (spots is uppercase and no spots is lowercase). If the organism does not have spots, then it is homozygous recessive with two s alleles (ss). If it had spots but had one S allele and one s allele (Ss) then it is heterozygous (two different alleles). If it had spots and had two S alleles (SS) then it is homozygous dominant. I hope that clarified.
In humans straight toes S is dominant over curled toes s What would be the result of a cross between a recessive male and a heterozygous female?
The result would be that all the offspring would have straight toes because the male contributes the recessive curled toes allele (ss) and the female can only contribute the dominant straight toes allele (S). Therefore, all the offspring would inherit one S allele from the female and an s allele from the male, resulting in the phenotype of straight toes (Ss).
If you are diagnosed with schizo-effective disorder can your future children inherit the disorder?
The allele for schizo-effective disorder is recessive, meaning that a person must inherit two genes (one from mom, one from dad), to actually have the disorder.It also means that if you or your partner has the disorder,If one of your families has no history of the disorder, chances are good thatLet's say schizo-effective disorder is represented with S or s.(lowercase symbolizes recessive, and capital is dominant)If you are diagnosed with Schizo-effective disorder, your genotype is ss.This is also called homozygous recessive.Let's say your spouse has no family history for at least 4 or 5 generations of this disorder. It is safe to assume, then, that he/she is homozygous dominant, or SS.The only allele you can pass on to your children is the recessive allele, since you have no dominant variation, and you must pass on one allele per gene to your children. This means that no matter what, your children carry the gene for schizo-effective disorder.The only allele your partner/spouse can pass on is the dominant allele, since we have made the assumption that both of her/his inherited alleles are 'normal' (negative for schizo-effective disorder).The dominant allele cancels out the effects of the recessive allele, so none of your children can actually have the disorder, but your grandchildren might, unless your children find another homozygous dominant partner.Note: Simply because a person does not have schizo-effective disorder does not mean that they are homozygous dominant. They may also be heterozygous, (Ss) like your children. this gives a 1/4 chance that your grandchildren will have the disorder. (this is also known as a monohybrid cross).
