Question

find the progeny of f1 and f2 generation when an tall plant with red flowers is crossed with dwarf plant with white flowers

Answer 1

ok first have u done monohybrid crosses? have u done a punnet square anytime before?

Answer 2

yah.........

Answer 3

ok great...now can u assign genotype to each of d phenotype written?

Answer 4

and have they given homozygous tall and red flowers?

Answer 5

TR AND tr

Answer 6

idk

Answer 7

ok wait....see..generally a genotype is written wid 2 letters...FOR EG
TT is homozygous dominant
Tt is heterozygous
tt is homozygoues recessive

Answer 8

wid me so far?

Answer 9

ya

Answer 10

cool...for now lets consider that both parents are homozygous....it having same type of letter(either capital or small) ok?

Answer 11

u know dat wen we write capital letter its d dominant allele and small is recessive?

Answer 12

ya

Answer 13

The principle of dominance.

The gene for purple flowers is dominant, while the gene for white flowers is recessive. We know this because both flowers are homozygous, meaning their genes are the same. The genotype of Penelope (the purple flower) is PP, or purple purple. The genotype of Walter (the white flower) is pp, or white white. Because of this, if the gene for white petals was dominant, all the flower offspring would display white petals. If the genes were codominant, the flower offspring would be lavender, an even mix between the white and purple phenotypes.

The Punnet square for this example (if you are a visual person) looks like this:

......................Walter
........................p | p
....................___ | ___
................P | Pp | Pp |
Penelope .....________
................P | Pp | Pp |
...................|___|___ |

You can clearly see that all the offspring are heterozygous, yet because they all share Penelope's phenotype, it is quite obvious that, again, the gene for purple flowers is dominant.

Answer 14

cool...now tall is d dominant allele and dwarf is recessive....red is dominant and white recessive..ok?

Answer 15

now can u tell me d genotype for homozygous tall plant?

Answer 16

u there?

Answer 17

TT

Answer 18

correct:D and similarly for red white and dwarf?

Answer 19

tt

Answer 20

RR
rr

Answer 21

hello,...............................

Answer 22

ok can u teach m e tmrw evening
i have to go now
sorry
bye.....................
by the way wat college are u studying in

Answer 23

yes correct...now club in tall and red-TTRR
dwarf and white-ttrr
now we hv 2 make d gametes

Answer 24

ok sure...bye..:D

Answer 25

when will u sleep