Question

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

I really need help on this one I don't understand how to list the possible genotypes and phenotypes

Answer 2

Do you know how to draw punnet squares?

Answer 3

ssets.openstudy.com/updates/attachments/5462832ae4b05b0e1f175ec6-undeadknight26-1415743177545-3.png like this?

Answer 4

http://assets.openstudy.com/updates/attachments/5462832ae4b05b0e1f175ec6-undeadknight26-1415743177545-3.png

Answer 5

Okay great....Now, each coloured box have different kind of genotype. All the red box have one type of genotype and similarly all the other color boxes. So do one thing, list all the four types of genotypes first.

Answer 6

Which four?

Answer 7

Each one in the colored boxes, like in all the red one it is BBLL. Write the rest..

Answer 8

I'll be able to help you if u respond faster...

Answer 9

BBLL,bBLL,BBLl,bbLI

Answer 10

I'm just having a hard time puting this in sentance form.

Answer 11

okay, now all these are different kinds of possible genotypes. Now we have to interpret the phenotypes for each of them.

Since B (black spots) are dominant over b (brown spots) and Long tails (L) is dominant over l (short tails)

BBLL will be black spots and long tails

bbLl will be brown spots and long tails

Answer 12

Similarly can you find the phenotype for rest of the two genotypes?

Answer 13

I can try

Answer 14

bBLL would be black spots and long tails

Answer 15

\(\huge \checkmark\)

Answer 16

BBLl would also be black spots and long tails?

Answer 17

\(\huge \checkmark\)

Answer 18

Everything's clear?

Answer 19

I still dont understand how to answer in sentance form?