A version of a trait that requires a homozygous genotype for expression is called a
Search for an answer or ask Weegy (Free). Original conversation. User: The physical expression of the genotype is called: A. offspring B. reproduction C. phenotype D. none of the above Weegy: An individual is homozygous for a gene if both alleles are identical; in a ...An organism's phenotype is its appearance; the genotype is the alleles an ...earch for an answer or ask Weegy (Free). Original conversation. User: The physical expression of the genotype is called: A. offspring B. reproduction C. phenotype D. none of the above Weegy: An individual is homozygous for a gene if both alleles are identical; in a ... Individuals who have two copies of the same allele are said to be homozygous at that locus. Individuals who receive different alleles from each parent are said to be heterozygous at that locus. The alleles an individual has at a locus is called a genotype.he illustration explores the relationship between the presence of different alleles at a specific locus and an organism's genotype and phenotype. The organism in the model is a plant. It is diploid and the trait is flower color. The allelic composition of a cell or organism is called its genotype. The expression of the alleles in a genotype results in observable traits in a plant called a phenotype (red rose color, white rose color, tall stems).The expression and visibility of these traits can be affected by environmental factors.he allelic composition of a cell or organism is called its genotype. The expression of the alleles in a genotype results in observable traits in a plant called a phenotype (red rose color, white rose color, tall stems). A cell is said to be homozygous for a particular gene when identical alleles of the gene are present on both homologous chromosomes. The cell or organism in question is called a homozygote. True breeding organisms are always homozygous for the traits that are to be held constant.n individual that is homozygous-dominant for a particular trait carries two copies of the allele that codes for the dominant trait. This allele, often called the dominant allele, is normally represented by a capital letter (such as P for the dominant allele producing purple flowers in pea plants). If the alleles are the same (TT or tt), the genotype is homozygous. If the alleles are different (Tt) the genotype is heterozygous. It is actually rare that 1 gene determines 1 characteristic as in the case of PTC tasting (a monogenic trait).Most traits are complex and have genes that affect them at more than 1 locus (polygenic).f the alleles are different (Tt) the genotype is heterozygous. It is actually rare that 1 gene determines 1 characteristic as in the case of PTC tasting (a monogenic trait). Most traits are complex and have genes that affect them at more than 1 locus (polygenic). The term for a genotype in which there is a dominant allele and a recessive one heterozygous The term for a genotype in which there are two recessive alleles.ecessive allele The percentage of offspring with a recessive trait if both parents are heterozygous dominant 25% The percentage of offspring with the dominant phenotype if one parent is homozygous domninate and the other parent is heterozygous dominant. When the alleles are identical, the individual is homozygous for that trait. While if the pair is made of two different alleles, the individual is heterozygous. A homozygous pair of can be either dominant (AA, BB) or recessive (aa, bb). Heterozygous pairs are made up of one dominant and one recessive allele (Aa, Bb).In heterozygous individuals only one allele, the dominant, gains expression while the other allele, the recessive, is hidden but still present.ot all copies of a gene are identical and alternative forms of a gene, called alleles, lead to the alternative form of a trait. Alleles are a way of identifying the two members of a gene pair which produce opposite contrasting phenotypes. 0% The genotype of any offspring if one parent is homozygous dominant (AA) and one parent is homozygous recessive(aa) heterozygous (Aa) Incomplete dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely dominant over the other allele.ecessive allele The percentage of offspring with a recessive trait if both parents are heterozygous dominant 25% The percentage of offspring with the dominant phenotype if one parent is homozygous domninate and the other parent is heterozygous dominant. Together, alleles determine the genotype. Alleles which determine some aspect of the phenotype, the physical appearance of an organism, are said to be coding alleles. When both alleles in a pair are the same, the alleles are homozygous. If the alleles are different, they are heterozygous.In the case of homozygous alleles, the expression of phenotype is usually very straightforward.lleles which determine some aspect of the phenotype, the physical appearance of an organism, are said to be coding alleles. When both alleles in a pair are the same, the alleles are homozygous. The genotype of an organism is often expressed using letters. The visible expression of the genotype is called an organism’s phenotype. Alleles are not created equal. Some alleles mask the presence others.Alleles that are masked by others are called recessive alleles.he illustration explores the relationship between the presence of different alleles at a specific locus and an organism's genotype and phenotype. The organism in the model is a plant. It is diploid and the trait is flower color.
Genotype and Phenotype