dominant genes and recessive genes?

Question

An individual represented by the shadded in square were to produce offspring with the individual represented by the shadded in circle. What would the genotype and phenotype of their offspring be? Explain.

Answer 1

You're going to need some more information. You need to know if shading is dominant trait and if square/circle is the dominant trait. Genotype is the letter designation for the traits while the phenotype is how the offspring would look. ie. circle or shaded.

Answer 2

In genetics, dominant trait refers to a genetic feature that hides the recessive trait. A dominant trait causes a phenotype that is seen in a heterozygous genotype. Many traits are determined by pairs of complementary genes, each inherited from a single parent. Often when these are paired and compared, one gene (the dominant) will be found to effectively shut out the instructions from the other, recessive gene. For example, if a person has one gene for blue eyes and one for brown, that person will always have brown eyes because they are the dominant trait. For a person to have blue eyes, both their genes must be blue (recessive). When a person has two dominant alleles, they are referred to as homozygous dominant. If they have one dominant allele and one recessive allele, they are referred to as heterozygous. In genetics, the term "recessive gene" refers to an allele that causes a phenotype (visible or detectable characteristic) that is only seen in a homozygous genotype (an organism that has two copies of the same allele) and never in a heterozygous genotype. Every person has two copies of every gene on autosomal chromosomes, one from mother and one from father. If a genetic trait is recessive, a person needs to inherit two copies of the gene for the trait to be expressed. Thus, both parents have to be carriers of a recessive trait in order for a child to express that trait. If both parents are carriers, there is a 25% chance with each child to show the recessive trait.

The term "recessive gene" is part of the laws of Mendelian inheritance created by Gregor Mendel. Examples of recessive genes in Mendel's famous pea plant experiments include those that determine the color and shape of seed pods, and plant height.