Question #99310
1 Answer
See below...
Explanation:
1) You basically just draw a single square since a square is technically a one by one.
2) (I’m assuming that the dominant trait is taster/roller) Since it’s homozygous, we put that as both uppercase letters to show it’s a dominant trait. And since (I’m assuming) that nontasters and nonrollers are recessive, we put those both as lower case.
3)
Genotypes (genetic construction of the child)
Phenotypes (observable characteristic)
4) Draw a 4 by 4 grid. So 4 rows and 4 column space.
5) Heterozygous means different allele for the dominant traits, so you would want to cross TtRr x TtRr. It should look something like this in the end. (Excuse my bad handwriting)
6) Count the specified traits in the boxes:
Roller/Taster (Need at least one R, and one T) = 9/16 = 56.25%
Roller/non-taster (Need at least one R, and both lowercase t) = 3/16 = 18.75%
Non-roller/Taster (Need both lowercase r and at least one T) = 3/16 = 18.75%
Non-roller/Non-taster (Need both lowercase r and both lowercase t) = 1/16 = 6.25%