Answer:
The correct answer is- Immune system
Explanation:
There are physical, chemical and immunological barriers present in our body which helps us to protect from the foreign antigen. They all assist each other and helps in pathogen removal from our body.
The physical barrier includes skin, gastrointestinal tract, respiratory tract, etc which do not allow the microbe to enter the body. Chemical barriers include tear, saliva, acid in the stomach which kills microbes on the body surface.
Immune cells like macrophages, B cells kills microbes when it gets in the body. Lymphatic system also contain immune cells and helps in microbe removal.
So the immune system is assisted by physical barrier, chemical barrier, and lymphatic system.
<span>Gregor Mendel conducted hybridization experiments on around 29,000 pea plants. Peas were an ideal choice for Mendel to use because they had easily observable traits there were 7 of which he could manipulate them.</span> He studied pea plants <span>because the are self pollinating , they grow fast , and they have many traits.</span>
Answer:
b. cis test
Explanation:
A test that is used to determine if the mutation associated with a given phenotype is due to mutations in two different genes or due to different alleles of the same gene is called a complementation test.
A complementation test is also called as a cis-trans test.
If the mutations in a complementation test are located on the same position then the genes are termed as being on the cis position otherwise on the trans-position.
A cis test, that is if the genes are located on the same position serves as a control for the complementation test.
The answer is: Chloroplasts.
Chloroplast's main function is to conduct photosynthesis and it's found in plant and algal cells. In photosynthesis the sunlight is transformed into chemical energy, to subsequently produce food for the plant or algal cells and the release of oxygen.
Answer:
Somatic cells:
When normal body cells mutate usually the effects are harmful in different ways which end up killing the cell.
Another type of scenario is where the cells survives but cells from the immune system recognized it and end up killing it.
sometimes somatics cells can accumulate mutations and survive which leads to a tumor or cancer.
Germ-line:
When germ-line cells produce gametes with mutations this mutations can end up killing the embryo. If the embryo survives the mutation can generate all sorts of genetic disorders, the spectrum here is massive and depends on the site of the DNA mutation.
