Determine the....?

Question

In snapdragon, red flower color (R) is incompletely dominant to white (r); the R/r heterozygotes are pink. A red flowered snapdragon is crossed with a white-flowered one. Determine the flower color of (a) the F1; (b) the F2;(c) the progeny of a cross of the F1 to the red parent; (d) the progeny of cross of the F1 to white parent .

Answer 1

Red crossed with white: RR x rr.
All the F1 are Rr pink because each gets R from one parent and r from the other parent.

b. The F2 is produced by crossing two of the F1s.
Rr x Rr
Gametes: R and r from one parent on left side of Punnett square; R and r from other parent on top of Punnett square.
First row of square: RR and Rr
Second row of square: rR and rr
Phenotypes of F2: 1 red: 2 pink: 1 white

c. Cross F1 pink with red parent
Rr x RR
Gametes: R and r; R and R
Offspring: RR, RR, rR, rR 1 red: 1 pink

d. Cross F1 pink with white parent
Rr x rr
Gametes: R and r; r and r
Offspring: Rr, Rr, rr, rr 1 pink: 1 white

Answer 2

Ok...just to tell you my punnett square don't always come out like they are supposed to...just know that on the top is 1 parent and down the far left is parent 2.

So Red flower is RR
Pink is Rr
and white is rr
This makes it easy when loking at the offspring as there are 3 genotypes and 3 phenotpyes (unlike complete dominance where you have 3 genotypes and only 2 phenotpyes)

crossing RR x rr
R R
r Rr Rr

r Rr Rr
All F1 flowers will be Rr (pink)

so the next cross is between these F1 flowers (Rr)..or at least I think you need that.
Rr x Rr

R r

R RR Rr

r Rr rr

You will have 1 red: 2 pink : 1 white. The classic 1:2:1 ratio

F1 (Rr) x RR (red parent)

R r

R RR Rr

R RR Rr

You will have 2 red: 2 pink or 50% red:50% pink flowers

F1 (Rr) x white parent (rr)

R r
r Rr rr

r Rr rr

you will get 50% pink: 50% white or 2 pink: 2 white.

Hope this helps

Answer 3

What do you mean "which do I trust"... all all persons has are perceptions. As an toddler perceptions are in basic terms being better. in the course of that extreme developmental section and for some thing else of a persons life, their perceptions are consistently replacing in accordance with previous events. that's why little ones elect virtually no longer some thing at first - their brains haven't got previous adventure with the global. even at the same time as they do start up recognizing gadgets as being quite a few issues, they nevertheless haven't got any understanding of them, or maybe that they are continual entities (they don't comprehend that once a ball rolls out of a room, it really is not any longer disappearing from life). EDIT i do not imagine you are able to assign an objective label to a subjective characteristic. reviews can in no way be info. it really is a incontrovertible truth that life is extra acceptable than no life, it is also a incontrovertible truth that there is a lot of unbelievable suffering in the global. it really is an opinion as to the way you view all of it.