Answer:
Mitochondrial gene is the gene which inherited from mother tothe offspring.
Explanation:
Some portion of DNA is also present in the mitochondria of the cell so mitochondrial gene is also transmitted from parent to their offspring. In humans, mitochondrial gene is transmitted from only one parent i. e. mother not father. The mitochondrial disease occurs in the human if the disease is present in the mother because it is transferred through genes from mother to their offspring. There are variety of diseases that occurs due to mitochondrial gene such as Mitochondrial myopathy, Diabetes mellitus and deafness etc. So the mitochondrial gene plays a vital role in the structure and function of human body.
Answer:
Cyclin-regulates the timing of the cell cycle. Normally, when cells touch, they stop growing. Growth factors-one of a group of external regulatory proteins that stimulate the growth and division of cells.
Explanation:
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Answer:
C. Organisms are now divided into three kingdoms.
Explanation:
In the early 1860s, a German scientist named Ernst Haeckel suggested using a three kingdom system of classification. Haeckel's three kingdoms were Animalia, Plantae, and Protista.
D- both involve moving substances across a membrane
Reasoning:
-Active transport moves against the concentration gradient ( low to high)
-Passive transport moves higher to lower concentration
DNA helicase is the enzyme that unwinds the DNA double helix by breaking the hydrogen bonds down the center of the strand. It begins at a site called the origin of replication, and it creates a replication fork by separating the two sides of the parental DNA.
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