If short hair L is dominant to long hair l animals LL and Ll have the same what?

Answer 1

If short hair, represented by L, is the dominant trait, then both animals with LL genes and Ll genes will have short hair because they have the short hair gene. The Ll animal, however, may have a long haired offspring if they mate with another animal carrying the long hair gene and they both pass it on.

Answer 2

Yes (this is me speaking from my own knowledge of Biology).

When using the symbols for alleles and assuming that capital "L" is dominant and lower "l" is recessive, then both animals have the same hair, short. This is because in the genetic makeup, one has a dominant allele for hair, and a recessive allele for hair, the dominant one wins over and that animal displays the dominant trait for hair (the actual display is called phenotype, the genotype being the actual combination of alleles). The other animal has two dominant alleles... well the answer to that is obvious, it has the dominant trait displayed.

However, to go into more detail:

If these two organisms reproduced sexually, then all of the resulting offspring would also have short hair. That is not to say that the recessive long hair trait is lost; if we form a punnett square (sorry I cannot remember how to spell the name), then we would see that the recessive trait has a chance to continue into the gene line.

(the punnett square outcome would be as follows)

50% outcome of LL, 50% outcome as Ll

While this does prove that all offspring will have short hair, you will see that there is a 50% with each offspring that the recessive gene will be carried on.

Answer 3

LL and Ll individuals will both have short hair, as the dominant allele (L) determines the hair length.

Answer 4

Phenotype