Question

Need some help with this question, can anybody help?
In one type of dog, black spots (B) are dominant over brown spots (b) and long tails (L) are dominant over short tails (l). Complete a dihybrid cross for parents with the genotypes: BbLL × BBLl and answer the following in complete sentences.

Describe how you would set up a Punnett square for this cross.
List the likelihood of each possible offspring genotype.
List the likelihood of each possible offspring phenotype.

Answer 1

@YanaSidlinskiy

Answer 2

@leonardo0430

Answer 3

sorry taking my algebra quiz ;-;

Answer 4

haha, alright then :P

Answer 5

Got anything?

Answer 6

Umm..Kinda...Did you solve anything yet on your side?

Answer 7

Lol I'm jus completely confused :P

Answer 8

I dont really want a direct answer, I jus want some help on wat to do

Answer 9

The Punnet Square is usually wat messes me up, but if I don't know the punnet square, i cant answer the other questions :/

Answer 10

>.< Same here.....It's gonna be a long post....Give me a sec..

Answer 11

Lol take ur time ;)

Answer 12

You have two chromosomes. One chromosome has the coat color allele on it. The other chromosome has the tail length allele on it. These two chromosomes sort independently.
That means that the possible combinations in which the BbL1L2 (where L1 indicates the tail length allele on the first chromosome and L2 indicates the tail length allele on the second chromosome) parent can sort themselves are B L1, B L2, b L1 and b L2.
Similarly, the possible combinations in which the B1 B2 L l (where B1 indicates the dominant allele on the first chromosome and B2 indicates the dominant allele on the second chromosome) can sort are B1 L, B1 l, B2 L and B2 l.
You put those combinations on either side of the Punnett Square and then you carry out your cross to see what genotypes are possible for the offspring. Then you interpret those genotypes to see what phenotype is associated with each one.
Now can you do it?

Answer 13

Whew! That was some timexD. Tried to type fastxD!!

Answer 14

Alright... so the punnet square is...

Answer 15

UGH, IM SO BAD AT THIS!!!

Answer 16

Would the Punnet square be like a... 6x6?

Answer 17

No ur not!!:) I'm bad at it too....But...Lol!!! I'll show youxD!!!

Answer 18

Hahha!!! NO.

Answer 19

Because you're doing a dihybrid cross, you have four possible chromsome assortment combinations for each parent. That means you start with a four by four square like the one I've done above.

Answer 20

W8, ok, so the u put the possible traits on the top or nah?

Answer 21

Along the top, you list the possible assortment combinations for the first parent. Along the left hand side, you list the possible assortment combinations for the second parent.
Yas.