Answer:
The correct answer is cells in the damaged parts divide and produce more cell by undergoing mitosis.
Explanation:
Mitosis is a process by which total number of chromosomes of parental cell is distributed equally within the 2 newly formed daughter cells.As a result the each daughter cell has same number of chromosome with respect to that of parental cell.
Mitosis also helps in wound healing by replacing the damaged cells with newly formed cells by cell division.
Answer:
His sisters son
Explanation:
Mitochondrial DNA are small circular chromosomes found inside the mitochondria. They are passed exclusively from the mother to children through the egg cell therefore it is maternally inherited.
In the given question. Mitochondrial DNA of an extended family was sequenced and compared to a single male.
His sisters son will match because the person and the sister will have similar mitochondria since they have the same mother. The sister will pass it down to her son.
Members of phylum Porifera are commonly known as spongs. They are generally marine and mostly asymmetrical animals. These are primitive multicellular animals and have cellular level of organization (lacks tissues). These Organisms (belonging to phylum Porifera) lacks most of the structures that are present in multicellular organisms like digestive system, respiratory system, Brain etc
Body of Spongs are made up of spicules or spongin fibers and these organism contain a water canal system which helps them in digestion, reproduction and catching their food in marine habitat.
