Answer: The drug abuse is influenced by the environment and exerts influence on the gene expressions.
Explanation:
The genetic make up of the person is decides, which genes will be expressed and develop a trait in an individual. But this genetic expression can be influenced by the environmental factors like food, exposure to sunlight, and others. This study which relate environment with the genetic make up is called epigenetics. No person is drug addict by birth but the consumption of drug can influence the genetic make up and traits in a abuser. So here, the environment is influencing the genetic basis of a abuser.
Answer:
mouth, pharynx, esophagus, stomach, Small Intestine.
Large Intestine.
Rectum.
Accessory digestive organs: liver, gallbladder, pancreas.
Answer:
During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase.
During interphase the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei. The cytoplasm is usually divided as well resulting in two daughter cells
Nondisjunction is the failure of a pair of chromosomes to separate (to disjoin) during cell division (meiosis). When this happens ( in anaphase I of meiosis) two out of the four new daughter cells produced from a parent cell will have an extra copy of one chromosome and the other two daughter cells will end up missing that chromosome.
Most of the time when fertilization involves gametes with an abnormal number of chromosomes, the resulting cell does not survive to produce a new individual. However there are some cases where the individuals survive and such, when they are born end up having a syndrome caused by too many or too few chromosomes. An example is Turners syndrome caused by too few chromosomes (monosomy x) , and Down syndrome caused by too many chromosomes (trisomy 21).
Answer:
Nondisjunction is the failure of a pair of chromosomes to separate during meiosis.
Explanation:
b. False
Running over worker with a dump truck which is over speeding is not an example of caught between hazard and caught in.
Caught between hazard or caught in is termed as a situation whereby a person is being compressed or squeezed or crushed between some two objects.