white crosses with orange. Fruits harvested from one tree are all red. No white and orange. explain this.?

Question

albescens mutation in palm produces white mesocarp when ripe, rather bright orange when ripe, which occurs in the wild type fruit. fruit with white mesocarp crossed with fruit with orange mesocarp. fruits harvested from one tree after 3 years are all red. 500 red: 0 white. What does this suggest about inheritance of the albescens trait? selving red produces ratio of 3 red: 1 white. what conclusion can be made about genetype of original parents for this trait?

Answer 1

It may be that the mutations are on different genes, so selving red would give that outcome, suggesting that the red is Rr genotype. However, if the orange mutation is in a different gene locus, all mutations are hidden when you cross with white, as you would have Rr with OO or Oo. This process is called complementation, where the crossing of two mutants of diffrent genes leads to normal offspring, if the mutation is recessive.

Answer 2

Hmmm ... look at how things work. Traits are a composition of male and female attributes. Half the raw material comes from one and half from the other.

Red parent could be pure red (RR), or half-red (Rw).
To get 3 red vs 1 white when selving, parents must both be Rw.
(Offspring are equally likely to be RR, Rw, wR, or ww).

Albescens is the inherited "white" trait, so it's a recessive condition. Orange is reasonably natural ... in wild fruit at least ... so it's more likely to be the Red-white cross.

To get albescens, the parents must both carry the recessive trait ... and it still isn't a guarantee that the offspring will show albescens. Most likely, the offspring will also be "carriers".

Answer 3

That white is the throwback 'albino', red is the dominant while orange is a variant?