A phenotype is an individual’s observable traits, such as height, eye color, and blood type. The genetic contribution to the phenotype is called the genotype. Some traits are largely determined by the genotype, while other traits are largely determined by environmental factors.
What determines the phenotype?
An organism’s phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes. … Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.
How can a person’s genotype for a trait be determined from his or her phenotype for the trait?
Genotype is determined by the makeup of alleles, pairs of genes responsible for particular traits. An allele can be made up of two dominant genes, a dominant and a recessive gene, or two recessive genes. The combination of the two, and which one is dominant, determines what trait the allele will express.
What factors affect phenotype?
An organism’s phenotype results from two basic factors: the expression of an organism’s genetic code, or its genotype, and the influence of environmental factors. Both factors may interact, further affecting phenotype.
How does a gene become a phenotype?
An organism’s genotype determines its phenotype. … Diploid organisms inherit two alleles for each gene; one allele from each parent. Interactions between alleles determine an organism’s phenotype. If an organism inherits two of the same alleles for a particular trait, it is homozygous for that trait.
Can a person’s genotype be determined by their phenotype explain?
No, a person’s genotype cannot be determined solely by their phenotype as many genes in our genome do not get expressed.
How do you know if a genotype is heterozygous or homozygous?
Because an organism has two sets of chromosomes, it usually only has two options to choose from when determining phenotype. If an organism has identical genes on both chromosomes, it is said to be homozygous. If the organism has two different alleles of the gene it is said to be heterozygous.
How genes and environment affect phenotypic expression?
Environment Can Impact Phenotype
Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal’s genes are expressed, which ultimately affects the animal’s phenotype.
What determines or contributes to your phenotype quizlet?
your genotype is what makes your phenotype. your base sequence of a gene is what determines your allele- dominant or recessive, your two alleles determine ypur genotype, your genotype determines your phenotype. an organism’s genotype determines theor phenotype, because the genotype has the genes.
Can phenotype be inherited?
The sum of an organism’s observable characteristics is their phenotype. A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism’s parents, the phenotype is not.
How does your DNA influence your phenotype?
These pairs of genes then determine certain physical features or traits. The genes that you have in your body right now make up your genotype. This genotype then determines your physical appearance, which is called your phenotype. … A gene can be either dominant or recessive.