Well primates have opposable thumbs and no tail
Your last choice should be the answer
Answer
At week 5-6 of gestation, the baby’s heart starts beating.
Explanation
Fertilization occurs in week 3 followed by implantation in week 4.In week 5 the levels of hormones increases with formation of the baby’s heart and circulation system. In week 6, the neutral tube closes followed by development of structures necessary to form eyes and ears. The head of the baby develops at week 7 followed by nose in week 8 and toes in week 9.
So a punnet square is used for putting together possible gene traits that one could have, let's say you have a black angus and a Red angus, red angus have the recessive gene black angus have both pronounced genes,
so for the black you have BB
and for the red you have Br
The first square would be BB
the second square would be BB
The third square would be BB
and the fourth square would be Br
so out of the 4 possible babies that you could have only 1 of them carries the recessive gene of the red angus coloring: the punnet square will look like this
B. Each set produces half of a sugar molecule, and later the two halves are joined together.
