Answer:
Chromosomes are passed down from parents (eggs and sperm). A specific kind of chromosome contains a gene that determines how the gene is inherited. Each person has two alleles and one is inherited from the mother and the other from the father. There are 46 chromosomes and 23 from each parent mixed around to figure which gene is going to be seen. Each egg carries an X chromosome and each sperm carries an X or Y chromosome and if there is two X chromosomes then it's a baby girl and if it is a X and a Y chromosome it's a boy.
Answer:
C
Explanation:
Answer 1: C
In an electrical synapse, the action potential traverses the synaptic cleft directly without involving any neurotransmitters. The adjacent neurons are connected to each other by gap junctions. These gap junctions allow movement of other molecules between the two cells including secondary messengers.
Answer: d. All the body cells arise from mitotic divisions of the same fertilized egg.
Explanation:
After conception occurs and an egg is fertilized, mitosis takes place as the egg begins to divide into other cells. This is how all the cells in the body are eventually formed regardless of how specialized their roles are.
As a result, every cell in the human body shares the same genes so any biological liquid or structure of the body would indicate the criminal because they would share the same gene as the rest of the cells in the criminal.
