Question

Define the following terms.

Drag the terms on the left to the appropriate blanks on the right to complete the sentences.

ResetHelp heritability QTL monozygotic twins correlation polygenes additive alleles dizygotic twins 1.   is a statistic that varies from -1 to +1 and describes the extent to which variation in one trait is associated with variation in another. 2.   is a measure of the degree to which the phenotypic variation of a given trait is due to genetic factors. 3.   are situations in which multiple genes contribute to a quantitative trait. 4.   arise from a single fertilized egg and are thus genetically identical. 5.   arise from two eggs fertilized by two different sperm cells. 6.   are involved in determining continuously varying or multiple factor traits. 7.   account for the hereditary influence on the phenotype in an additive way.

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Answer 1

Answer =

• Answer =
• 1. QTL = is a statistic that varies from -1 to +1 and describes the extent to which variation in one trait is associated with variation in another.
• 2.heritability =    is a measure of the degree to which the phenotypic variation of a given trait is due to genetic factors.
• 3. Polygenes = are situations in which multiple genes contribute to a quantitative trait.
• 4.  monozygotic twins = arise from a single fertilized egg and are thus genetically identical.
• 5.   dizygotic twins = arise from two eggs fertilized by two different sperm cells.
• 6. Correlation = are involved in determining continuously varying or multiple factor traits.
• 7. Additive allele = account for the hereditary influence on the phenotype in an additive way.

Definations of

dizygotic twins = The twins that are developed from two separate zygote, called as dizygotic twins. they are nonidentical twins.

monozygotic twins = The twins that are developed from one zygote, called as monozygotic twins. they are identical twins.

heritability = is defined as, it is a statistic used in the fields of breeding and genetics that estimates the degree of variation in a phenotypic trait in a population.

QTL = quantitative trait locus can be defined as ,"is a locus that correlates with variation of a quantitative trait in phenotype of a population of organisms.

Polygene = is defined as," group of genes that when expressed together produce a particular phenotype or trait.

Additive allele = are the alleles that contribute to most observable trait.