Both pups are from the same litter. Notice they both have brown eyes. What do you know about the eye color of the parents?

A) All dogs have brown eyes

B) Both of the parents must have brown eyes

C) Dogs inherit their eye color from their mom

D) At least one of the parents has a gene for brown eyes

I’m between B and D.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.