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T is genetic trait for tallness and its allele t is recessive for tallness and their are four children with alleles TT tT Tt tt how many will be tall?
OK first, you don't say tT. The dominant allele is always put first. So this would actually be TT Tt Tt and tt. The only way a recessive trait will show is if the dominant trait isn't present. Therefore 3 will be tall and one will be short. BTW: TT isn't an example of an allele. It's actually the genotype. T is an example of an allele. Tallness is a genetic trait, but T is not. A genetic trait is simply a title that includes whatever phenotype may become apparent. A phenotype is the trait that shows up. If a person's genotype is TT or Tt, their phenotype will be tall. If a person's genotype is tt, then their phenotype will be short.
What else can I help you with?
Why are some genes alleles dominant and recessive?
Genes have dominant and recessive alleles because of the way they interact with each other. Dominant alleles are expressed over recessive alleles because they carry instructions that override the instructions of the recessive allele. This dominance is determined by the specific genetic makeup and interactions within an organism.
Is it true that recessive alleles are never present when dominant alleles are present?
No, recessive alleles can still be present in an individual's genetic makeup even when dominant alleles are present. In this case, the recessive allele may not be expressed phenotypically, but can still be passed on to offspring.
How are dominant and recessive alleles are represented in a punnet square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
What are the different forms of a gene either dominant or recessive?
Genes can exist in different forms called alleles. Dominant alleles are expressed when present, masking the effects of recessive alleles. Recessive alleles are only expressed when two copies are present, one from each parent. This results in a wide range of possible genetic combinations and expressions.
How are alleles represented in genetic inheritance?
Alleles are different forms of a gene that can be inherited from each parent. In genetic inheritance, alleles are represented by letters, with uppercase letters denoting dominant alleles and lowercase letters denoting recessive alleles. Each individual inherits two alleles for each gene, one from each parent, which determine their genetic traits.
What are the two different alleles for a gene?
I think it is Dominant and recessive.
Why are some genes alleles dominant and recessive?
Genes have dominant and recessive alleles because of the way they interact with each other. Dominant alleles are expressed over recessive alleles because they carry instructions that override the instructions of the recessive allele. This dominance is determined by the specific genetic makeup and interactions within an organism.
What is the DNA sequence that affects genetic information?
The alleles : Dominant and recessive i think
Is it true that recessive alleles are never present when dominant alleles are present?
No, recessive alleles can still be present in an individual's genetic makeup even when dominant alleles are present. In this case, the recessive allele may not be expressed phenotypically, but can still be passed on to offspring.
How are dominant and recessive alleles are represented in a punnet square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
What has the disadvantage of bringing two recessive alleles together and causing a genetic defect?
Inbreeding
Are capital letter are used to represent recessive alleles?
No, capital letters are used to represent dominant alleles, while lowercase letters are used for recessive alleles. For example, in a gene where "A" represents a dominant allele, "a" would represent the recessive allele. This convention helps distinguish between the two types of alleles in genetic notation.
What term describes the inheritance if cystic fibrosis?
The term that best describes the inheritance of cystic fibrosis is that it is genetic. Cystic fibrosis is caused by recessive alleles. Cystic fibrosis is an autosomal recessive genetic disease.
Does a phenotype refer to the recessive alleles of an individual?
No, a phenotype refers to the observable traits or characteristics of an individual, which result from the interaction of its genotype (the genetic makeup, including both dominant and recessive alleles) with the environment. Recessive alleles can influence phenotype, but they do so only when two copies are present, as their effects are masked by dominant alleles. Therefore, a phenotype encompasses all expressed traits, not just those linked to recessive alleles.
Using the terms dominant recessive explain the difference between genotype and phenotype?
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
What are the different forms of a gene either dominant or recessive?
Genes can exist in different forms called alleles. Dominant alleles are expressed when present, masking the effects of recessive alleles. Recessive alleles are only expressed when two copies are present, one from each parent. This results in a wide range of possible genetic combinations and expressions.
How are alleles represented in genetic inheritance?
Alleles are different forms of a gene that can be inherited from each parent. In genetic inheritance, alleles are represented by letters, with uppercase letters denoting dominant alleles and lowercase letters denoting recessive alleles. Each individual inherits two alleles for each gene, one from each parent, which determine their genetic traits.
