When did photosynthesis begin? a about 1.2 billion years ago
b about 3 billion years ago
Cabout 4.6 billion years ago
d about 28 million years ago

Which experiment would most likely contain experimental bias

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other

What will a hypothesis become if supported by repeated expermentation