Question

In a certain species of rabbit, black fur (B) is dominant to brown fur (b). The lack of a tail (T) is dominant over the presence of a tail (t). What fraction of the offspring of a cross between BbTt and BbTt will have black fur and tails?
a
1/16
b
3/16
c
3/8
d
9/19

Answer 1

@AZ

Answer 2

@snowflake0531

Answer 3

AZ?

Answer 4

is it right?

Answer 5

So we have two parents with BbTt. That means the possible gametes that the offspring can have are BT and Bt as well as bT and bt

Can you fill in the Punnett square?

Answer 6

keep in mind that not having a tail (T) is dominant

so we're looking for something that has black fur (B) and a tail (t)

and for it to have a tail, it needs to be tt
because if it's Tt or TT then it would not have a tail