Guinea Pig Coat types
in guinea pigs, rough coats (with lots of swirly cowlicks) are domiant over smooth coats. If a male homozygous dominant guinea pig is crossed with a female heterozygous guinea pig, what are the possible genotypes and phenotypes of the offspring? complete the punnett square and the percentages of rough and smooth coated offspring.
use the following rough=R and smooth =r
%_
%_
1._
2._
3._
4._
5._
6._
7._
8._
9._
10._
To complete the Punnett square, we need to cross a homozygous dominant male guinea pig (RR) with a heterozygous female guinea pig (Rr):
| R | R
-----------------
R | RR | RR
-----------------
r | Rr | Rr
From the Punnett square, we can see that there are four possible genotypes: RR, RR, Rr, and Rr.
Now, let's determine the phenotypes:
- RR: Rough coat (dominant)
- RR: Rough coat (dominant)
- Rr: Rough coat (dominant)
- Rr: Rough coat (dominant)
So, all of the offspring will have rough coats.
Therefore, the percentages of rough-coated offspring will be 100%.