Why do some traits skip a generation?

Answer 1

I like puppies :)

Traits 'skip' generations precisely because most traits are not accounted for by a single gene, but by their combination with other genes. There is no brown hair gene, or blue eye gene. These traits may be controlled by recessive genes, so they seem to skip a generation from grandparent to you.

For example, if a trait is produced by a recessive gene, one of your parents may be a carrier but not possess the trait (because she inherited a dominant gene that overrode the recessive one). However, when her genes were recombined to produce the ovum from which you grew, and when that combined with your father's DNA, the trait may resurface.

Answer 2

Yes, a trait can skip a generation. It happens with the "Recessive" genes. If you look into the middle-east, you can see that there are more diseases in the families because over there, people marry their cousins and so on. Since that occurs, the genes are similar and both have the disease making it a dominant trait for the offspring.

Answer 3

because it just does. haha jkjk. the real answer is that since the tall plants are dominant, then the recessive plants( shot plants) will be overcome. However, they do still stay there so when they.....interbreed.....then the short plant comes bak

Answer 4

A physical trait can "skip" a generation because traits carried and expressed in an organism by genes can be transmitted but not be observed. This recessive gene carries the information for the trait but is not expressed, therefore it is there but not seen. Recessive genes can recombine to form dominant genes in later generations, which once again give rise to the previously "skipped" trait.

Answer 5

AA X AA

= all Aa

Aa X Aa

= 2 Aa, 1 AA and the expression of the homozygous recessive; AA

As you see, simply put, some traits are masked by dominant traits in one generation but can be brought to expressivity in the next generation.

Answer 6

Recessive traits skip generations because the recessive allele is masked in the heterozygous state in one generation and is expressed in the homozygous state

in the next generation. In small populations with a low frequency of recessive alleles a recessive trait can go several generations before it is expressed.

Answer 7

They can, if the traits are recessive. You would need two copies of the traits for them to be expressed. If you had one dominate trait and one recessive, only the dominate would be expressed. Experiments were done with sweet peas and tall peas are dominate but short ones are recessive. If you cross the two, only the tall genes are expressed. You would "see" only tall pea plants. It would seem that the traits had skipped the generation but they are just recessive. If two plants are crossed that carried both traits, some of the plants will be short (1/4).

Answer 8

It's a recessive gene.