When does the recessive trait show in an organism?

Answer 1

Recessive traits appear only if the dominate trait is not present... Therefore, the parents must both carry a recessive allele- so the parents would have to be Heterozygous (Hh) or Homozygous Recessive (hh) or a mixture of the two (say mom is Hh and dad is hh). For the recessive to appear, the child must be (hh).

Answer 2

In classical (or Mendelian) genetics, a recessive trait is one that is easily masked by another, or dominant trait. The two types of a specific trait are called alleles, so there could be a dominant allele and a recessive allele for a specific trait, such as flower color. The reason the recessive alleles can become hidden by dominant alleles is usually because the dominant allele has some biochemical advantage.

Lets look at the example of flower colors: Lets say the dominant allele of flower color is red, and the recessive allele is white. When both alleles are present at the same time, the flowers are making both the white version and the red version. We will only see the red version, though, because when red and white are together in the same place the red will cover up the white.

So, a recessive trait can only be displayed by an organism when there is no dominant allele present to cover it up.

This is a simplified look at Mendelian genetics, which can also involve codominance, where maybe red AND blue can be dominant, so that if they are both present you get purple flowers. There could be incomplete dominance, which would mean that red is only slightly dominant, and when the allele for red and white are both there you get pink because red isn't strong enough to completely wash out white. Not to mention issues of lethality.

Answer 3

The recessaive trait will show when the organism got both recessive traits from the parents. If the dominant trait was present in the organism then that would definitely override the recessaive trait.

Answer 4

When mother is a heterozygous carrier, and father also is... then there is a 25% chance the offspring will be recessive (Punnet Square)... Or when one or both of the parents are also carrying ONLY the recessive allele (no dominant one present)... then a recessive trait shows up "phenotypically"
Hope this helped ya

Answer 5

The recessive trait only shows when the organism doesn't have any copies of the dominant allele. Only has the recessive allele.

Answer 6

by chance...if both parents are purebred of the recessive trait then for sure the baby will have recessive traits.

Answer 7

It doesn't show up at all in that organism. However, it may show up in that organism's offspring.