Question

which method will provide evidence that all human body cells originate from a single cell? compare the cellular structures to identify identical types of cells compare the activated genes to identify differences in different types of cells determine the sequence of dna is nearly identical in different types of cells determine the functions of different types of cells which statement is true about the differentiated cells in an organism? all cells begin with the same basic dna but gain additional genes allowing them to differentiate. once fertilization occurs, differentiated cells exist because every cell contains different dna differentiated cells have the same dna, but they do not activate all parts of their dna all cells start with the same dna but lose various non - essential segments of dna during differentiation. a human body cell has 46 chromosomes. which diagram represents mitosis in a human body cell? parent cell daughter cells 46 46 46 parent cell daughter cells 46 23 23 parent cell daughter cells 46 92 92 parent cell daughter cells 46 26 20

Explanation:

1. All human body cells originate from a single - cell zygote. DNA sequence is nearly identical in different types of cells as they are derived from the same original cell, which provides evidence for a single - cell origin. Comparing cellular structures, activated genes, or cell functions doesn't directly prove a single - cell origin.
2. Differentiated cells in an organism have the same DNA. The difference between them is due to gene regulation, where not all parts of the DNA are activated in each cell type. They don't gain or lose genes during normal differentiation.
3. Mitosis is a process where a parent cell divides to produce two daughter cells with the same number of chromosomes as the parent cell. In human body cells with 46 chromosomes, the daughter cells after mitosis also have 46 chromosomes each.

Answer:

1. determine the sequence of DNA is nearly identical in different types of cells
2. Differentiated cells have the same DNA, but they do not activate all parts of their DNA
3. Parent Cell (46) → Daughter Cells (46) (46)