Question

How would you describe the patterns of inheritance? Does that play a role in when life begins? Why or why not?

Answer 1

Patterns of inheritance :

The phenotype of an individual is determined by his or her genotype. The genotype is determined by alleles that are recived from the individual's parents (one from Mom and one from Dad). These alleles control if a trait is "dominant" or "recissive".

Additionally, the location of the alleles in the genome determine if a traits are recessive if two copies of an allele are required for expression of the trait. X-linked traits are those controlled by an allele that is carried on the X chromosome, while autosomal traits are controlled by alleles located on any chromosome excluding the X or Y. Expression of X- linked traits depends on a number of factors including a dominant verses recessive allele, and the gender of the offspring.

Dominant inheritance

Pattern of inheritance in which, when a child receives different alleles, only the document one is expressed.

Recissive inheritance

Pattern of inheritance in which a child recives identical recessive alleles, resulting in expression of a non dominant traits

Polygenic inheritance

Patterns of inheritance in which multiple genes at different sites on chromosomes affect a complex trait.

Incomplete dominance

Pattern of inheritance in which a child receives two different alleles, resulting in partial expression of a trait.

Sex - linked inheritance

Pattern of inheritance in which certain characteristics carried on the X chromosome inherted from the mother are transmitted differently to her male and female offspring.