Can different alleles produce the same phenotypes?
Different genotypes can produce the same phenotype. Different genotypes can produce the same phenotype.
How many different allele combinations can possibly be produced?
Each chromosome contains dozens to thousands of different genes. The total possible combination of alleles for those genes in humans is approximately 70,368,744,177,664. This is trillions of times more combinations than the number of people who have ever lived.
Is the combination of two alleles that are the same?
The combination of alleles that an organism carries constitutes its genotype. If the paired alleles are the same, the organism’s genotype is said to be homozygous for that trait; if they are different, the organism’s genotype is heterozygous.
Can different genes have the same alleles?
When genes mutate, they can take on multiple forms, with each form differing slightly in the sequence of their base DNA. … Different versions of the same gene are called alleles. Genes can have two or more possible alleles. Individual humans have two alleles, or versions, of every gene.
Can different genotypes produce different phenotype?
An organism’s genotype is the set of genes that it carries. … However, since an organism’s genotype generally affects its phenotype, the phenotypes that make up the population are also likely to change. For example, differences in the genotypes can produce different phenotypes.
How alleles interact with one another?
Alleles of a single gene can interact with other alleles of the same gene or with the environment. When heterozygous offspring look like one parent but not the other – •complete dominance, dominance series. When heterozygotes show a phenotype unlike that of either parent – •incomplete dominance.
What results from a cross with incomplete dominant alleles?
Codominance and incomplete dominance yield unique phenotypes for heterozygous offspring (Aa). Incomplete dominance results in heterozygotes with intermediate phenotypes, as in the case of snapdragons when parents with red flowers and white flowers are crossed resulting in heterozygous offspring with pink flowers.
When there are more than two alleles controlling the same character These are called?
|Codominance||Pattern of heredity in which both alleles are simultaneously expressed in the heterozygote|
|Multiple alleles||A gene that is controlled by more than two alleles|
|Pleiotropy||When one gene affects multiple characteristics|
|Lethal allele||Allele that results in the death of an individual|
What is most likely to differ between two alleles for the same gene?
What is different between two alleles of the same gene? The information they carry. For example, one allele might carry the information for blue eye pigment, while the other carries the information for brown eye pigment.
What term describes a pair of alleles that are the same?
Usually alleles are sequences that code for a gene, but sometimes the term is used to refer to a non-gene sequence. … An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene.