molecule, cell, biology @ Pixabay

A gene is recessive when it cannot be expressed in the phenotype of an organism. This means that in order for a person to have a recessive gene, they need two copies of the allele. If someone has one copy and their partner has another, there will not be any expression of this trait because both alleles are dominant.

However, if both parents carry two copies of the same allele, then there will be an expression on this trait in offspring. Do not write numbers or bullet points. A gene is recessive when it cannot be expressed in the phenotype of an organism. This means that in order for a person to have a recessive gene, they need two copies of the allele.

dna, genetic material, helix @ Pixabay

If someone has one copy and their partner has another, there will not be any expression of this trait because both alleles are dominant. However, if both parents carry two copies of the same allele, then there will be an expression on this trait in offspring. The carrier frequency for autosomal recessive genes (genes located on chromosomes other than sex chromosomes) is 25%. Therefore, out of every four children born with six different traits each parent may pass down three different ones.

LEAVE A REPLY

Please enter your comment!
Please enter your name here