The t locus is involved in the production of tails in a mouse; tt individuals are without tails, whereas tt and tt have tails. the l locus is involved in the color of tails: assuming that they have tails, individuals that are ll have light tails, whereas all others have dark tails. the two loci are on different chromosomes. in a dihybrid cross between ttll individuals, what fraction will have light tails?

1/4 are light tailed mouse

Explanation:

Given

T(With Tail) is dominant over t (tailless)

L (dark tail ) is dominant over l (light color tail)

A cross is made between TtLl and TtLl

TL         Tl         tL         tl

TLTTLLTTLl  TtLL  TtLl

TlTTLl         TTll         TtLl         Ttll

tLTtLL         TtLl         ttLL         ttLl

tlTtLl         Ttll         ttLl          ttll

Genotype of offspring are –  

TTLL – 1

TTLl – 2

TtLL – 2

TtLl – 4

TTll- 1

Ttll- 2

ttLL – 1

ttLl - 1

ttll- 1

Light colored tail species - TTll, Ttll, ttll

Out of 16 , 4 are light colored

Thus 1/4 are light tailed mouse

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.