Question

Ralph wants to breed his bulldogs. for dominant alleles, he has selected small ears (E) and curly tail (T). Linus the male dog is homozygous dominant for both traits. Lucy the female is heterozygous dominant for both traits...

A.) What are lucy and linus genotypes?
B.) what % of there pups will have small ears (E) and curly tails (T)?
C.) what % of there pups will have large ears (e) and straight tails (t) ?

Answer 1

A) EETT, EeTt
B)100%
C)0%

Answer 2

a)

Linus has genotype EETT

Lucy has genotype EeTt

b)
`100`% of the pups will have small ears (E) and curly tails (T)

c)
`0`% of the pups will have large ears (e) and straight tails (t)

Step-by-step explanation:

Given -

E represents the dominant trait for small ears

T represents the dominant for curly tails

e represents the recessive trait for large ears

t represents the recessive trait for curly tails

a)

Linus has genotype EETT

Lucy has genotype EeTt

b)

ET ET ET ET

ET EETT EETT EETT EETT

Et EETt EETt EETt EETt

eT EeTT EeTT EeTT EeTT

et EeTt EeTt EeTt EeTt

Allele for EETT – ET, ET, ET, ET

Allele for EeTt – ET, Et, eT, et

The genotype for pups with small ears (E) and curly tails (T) is

EETT, EeTt, EETt, EeTT

Number of pups with genotype EETT , EeTt , EETt, EeTT are 16

`100`% of the pups will have small ears (E) and curly tails (T)

c)

None of the pups will have large ears (e) and straight tails (t)

Thus,
`0`% of the pups will have large ears (e) and straight tails (t)