Answer:
some specific safeguard protein are present
Explanation:
the specific protein which are present at G1 phase name cyclin dependent kinase they also initiate dna division
Answer:
Bacteria Evolution
This process is called Endosymbiosis.
Explanation:
Symbiosis is a relationship in which organisms from two separate species live in a close, dependent relationship. Endosymbiosis (note that endo means within) is a specific type of symbiosis where one organism lives inside the other.
This causes bacteria, mitochondria, and chloroplasts to be similar in size. Bacteria also have DNA and ribosomes similar to those of mitochondria and chloroplasts.
Based on this and other evidence, scientists think host cells and bacteria formed endosymbiotic relationships long ago, when individual host cells took in aerobic (oxygen-using) and photosynthetic bacteria but did not destroy them. Through millions of years of evolution, the aerobic bacteria became mitochondria and the photosynthetic bacteria became chloroplasts.
Ans.
In humans, there are total of 46 chromosomes in each cell that show 23 pairs of chromosome. During reproduction, meiosis occurs in germ cells that leads to formation of daughter cells or gametes that contain half of the chromosomes as present in parent cells. Thus, each gamete (either male or female) contains 23 chromosome.
During fertilization, fusion of male gamete or sperm(with 23 chromosomes) and female gamete or ovum(with 23 chromosomes) to form zygote that develops into multi-cellular offspring with 46 chromosomes.
Thus, 'a child inherit 46 chromosomes from his or her parent (23 chromosomes from each parent).'
Answer: The correct option is (At least one member must benefit in a symbiotic relationship.)
Explanation:
Explanation:
It depends upon some factors like
Major factor
- Your age
- Your lifestyle
- Your size
Other factors
- Some hormones
- Some medicine
- Being unwell
