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How differences in genotypes cause variations in phenotypes?
Phenotypes are the traits expressed by the genotype. So, for blood type, a person can have A and i alleles (genotype). However, in the phenotype, since i is recessive, only the A will be expressed, and the person will have an A blood type.
A scientist notices that a person has two recessive genes for a trait This describes the person's?
genotype for that trait.
What is the genotype of a person who is a carrier of a autosomal recessive trait?
The genotype of a person who is a carrier of an autosomal recessive trait is typically heterozygous, meaning they carry one copy of the recessive allele and one copy of the dominant allele for that trait. This would be represented as Aa, with the lowercase "a" representing the recessive allele.
Is it true that if a person has a recessive trait the genotype must be homozygous recessive for the trait?
Yes, if a person expresses a recessive trait, their genotype must be homozygous recessive for that trait. This means that they have two copies of the recessive allele, one from each parent. If they were heterozygous they would not display the trait.
How do you determine genotype?
Either analyzing the DNA sequence (which you probably don't have a lab to do it in) or breeding the organism and use a PUNNET SQUARE to determine if they are purebred. (don't try the breeding experiment on humans.)
How differences in genotypes cause variations in phenotypes?
Phenotypes are the traits expressed by the genotype. So, for blood type, a person can have A and i alleles (genotype). However, in the phenotype, since i is recessive, only the A will be expressed, and the person will have an A blood type.
How are Genotype phenotype different?
Phenotypes are the traits expressed by the genotype. So, for blood type, a person can have A and i alleles (genotype). However, in the phenotype, since i is recessive, only the A will be expressed, and the person will have an A blood type.
A scientist notices that a person has two recessive genes for a trait This describes the person's?
genotype for that trait.
What is the genotype of an individual with albinism?
I think no. It's caused by a recessive gene so if a person has albinism their genotype can only be recessive, recessive ---> AA (small a small a or whatever you call it). No other genotype will mean that person has Albinism, like if it has at least one big A, that means it's just a carrier of albinism.
What is the genotype of a person who is a carrier of a autosomal recessive trait?
The genotype of a person who is a carrier of an autosomal recessive trait is typically heterozygous, meaning they carry one copy of the recessive allele and one copy of the dominant allele for that trait. This would be represented as Aa, with the lowercase "a" representing the recessive allele.
Is it true that if a person has a recessive trait the genotype must be homozygous recessive for the trait?
Yes, if a person expresses a recessive trait, their genotype must be homozygous recessive for that trait. This means that they have two copies of the recessive allele, one from each parent. If they were heterozygous they would not display the trait.
An example of a heterozygous recessive genotype is?
An example of a heterozygous recessive genotype is when an individual carries one dominant allele and one recessive allele for a particular trait. One example could be a person with the genotype Aa, where "A" represents the dominant allele and "a" represents the recessive allele.
How do you determine genotype?
Either analyzing the DNA sequence (which you probably don't have a lab to do it in) or breeding the organism and use a PUNNET SQUARE to determine if they are purebred. (don't try the breeding experiment on humans.)
What is the phenotype of an orgarism?
The phenotype is the characteristic or trait that is expressed in the organism. So, for example, if a person has blue eyes, his/her phenotype for eye color is blue. In case you didn't know, the genotype is simply the gene that codes for the phenotype. So with the blue eyes, the genotype of the person for eye color must have been recessive alleles (because blue eyes are a recessive trait).
What is an example of a statement the clearly refers to a person's genotype?
B. Bill is recessive for height and dominate for hair color.
What would be the genotype of a person with cystic fibrosis?
The genotype of a person with CF is cc. The genotype of a carrier of a CF mutation is Cc.
What type of blood would you have if parents are o negative and a positive?
There is no single answer to this question.First, some definitions. PHENOTYPE is how the trait is physically displayed in the person, so the parents in this case have the phenotypes O and A. GENOTYPE is the pair of genes that a person carries that determines their phenotype. A RECESSIVE gene is one "trumped" by a DOMINANT gene in the genotype; for blood typing, O is the recessive gene and A and B are dominant. For a person to show the recessive phenotype, they must carry BOTH recessive genes; so, a person with type O must carry two O genes, genotype "OO".OK, now for our situation. The O parent has genotype OO, as explained above, and so can ONLY pass on the O gene. The type A parent, however, can have genotype AA or AO. Because the A gene is dominant, with the AO genotype the parent is still type A but can pass on EITHER the A gene or the O gene. The child can therefore end up with phenotype AO and be type A or OO and be type O. If exactly one-half of people with type A blood have genotype AA and one-half have AO, the probability of this child being type A is 75%.For the Rh factor (positive and negative), positive is the dominant trait and negative is recessive. The A- parent must be genotype -/- and can only pass on the - gene. The O+ parent can be +/+ or +/- and can pass on either gene, same situation as above. Again, if people with Rh type positive are split exactly 50/50 in genotypes, this child has a 75% chance of being positive.
