Each person carries 23 pairs of chromosomes in every cell that makes up their body, with the exception of gametes, which contain 23 SINGLE chromosomes. So when a sperm and egg meet, they then have 23 pairs. In the process of meiosis 'crossing-over' occurs, which means that the chromosomes get "shuffled". This means that the child can receive random traits not only from the parents, but also the grandparents. so there is about 2⁴⁶ possible pairings, excluding the risk for things such as Down-Syndrome
Answer:
In his experiment, Griffith used two strains of Streptococcus pneumoniae type II- rough(R) strain and a type III smooth(S) strain. The type III smooth strain had an outer polysaccharide capsule which makes smooth strain a virulent strain.
So in his experiment, Griffith injected these strains in mice in an order and observed the result. When he
injected living S strain- Mice died
Injected living R- strain- Mice survived
Injected heat-killed S strain- Mice survived
Injected heat S strain+ living R strain- Mice died
So after his experiment, he concluded that R strain took something from heat killed S strain which transformed the R strain into virulent strain that killed the Mice. So based on this experiment Griffith gave transformation principle.
Smoking is a dangerous habit that increases the risk of heart attack and atherosclerosis. The toxins in a cigarette can lower a person’s “good cholesterol” while lowering their “bad cholesterol.” The nicotine and carbon found in a cigarette can also harm the endothelium. Aside from this, it increases the chances of developing malignant hypertension. Smoking is indeed bad for the heart.
Answer: The correct answer for the blank is-
Radius and ulna.
The radius and ulna are the two bones that are located in the forearm. The forearm is the area of the upper limb, which extends from the elbow region to the wrist region in the arm.
Both of these bones provide lateral support to the hand as radius bone provides supports the region where thumb is present and ulna bone provides lateral support towards the region of the little finger.