Question

Help please?
If a corn plant has a genotype Sstt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant?
Ss, tt, St, st
Ss, tt, St, ST
St, st
St, sT, st

Answer 1

I know for a fact its not D
But i was thinking it was B.

Answer 2

For Sstt , possible gametes are

St , St , st , st

Answer 3

So basically there are only two i.e St and st

Answer 4

Have you tried making a Dihybrid Cross? That can help.

Answer 5

So it would be C...Well that makes sense...
Whats a Dihybrid Cross?

Answer 6

For questions like this....i'll tell you atrick

Answer 7

@Abhisar Is right. C is it.
BTW, you should google it. the dihybrid cross can help you alot and its super easy to make. heres a sample picture.

Answer 8

Ss, tt, St, st are the possible combinations

Answer 9

You just fill out the chart with the letters and it gives you all of the possibilities.

Answer 10

@undeadknight26

Answer 11

Heres a simple one. Its easy. :)

Answer 12

hmm
So in this question:
In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. If two red-eyed heterozygous flies (Rr) mate together, what are the possible genotypes of their offspring? (Hint: You many want to complete a Punnett square.)

I would just be Rr then right?

Answer 13

I guess so.

Answer 14

I remember punnett squares. They are basically the dsame as dihybrid crosses.

Answer 15

Separate the two characters, in the case of Sstt, write it as Ss , tt. Now take S and s at one time and write it with both the alleles of second character.

For example, let's take S first,
St, St
Now take s,
st , st