The way in which the knowledge of the human genome be useful for in-vitro fertilization techniques is that the disease free sperm and ova can be very easily identified and used on wheels. It is never possible to clone a male without an ova and this has already been proved. The process of taking care of premature babies have got a boost through the process of in-vitro fertilization.
The part of the endometrium that undergoes cyclical changes in response to sexual hormonal levels is the ______.
serosa
functional zone
muscular myometrium
basilar zone
none of the choices is correct
Answer:
functional zone
Explanation:
The endometrium of the uterus is a highly vascularized layer. The endometrium has the innermost of simple columnar epithelium, thick stroma, and the endometrial glands. Functionally, the endometrium has two layers. The functional layer or the functional zone is also called stratum functionalis. It serves to line the uterine cavity and sloughs off during menstruation. The basal layer is deeper and is called stratum basalis. It is permanent and forms a new functional zone after each menstruation.
Answer: The sunlight hits the upper surface of the leaf, and sunlight is crucial to the photosynthesis process. The leaves trap the energy and use it to create glucose.
Answer:
The consumption of a drug that inhibits or block the enzyme primase will have problems for the replication of DNA, since it is not possible to synthesize a new strand without this enzyme.
Explanation:
During DNA replication, the enzyme primase is responsible for synthesizing the primers, RNA fragments necessary for the DNA polymerase III to synthesize the new DNA strand.
If for any reason the action of the primase is blocked, the primer could not be synthesized and the effect of DNA polymerase III would be null, so the new DNA strand could not be synthesized.
In DNA replication, the primase contributes to the formation of small fragments of DNA, by the action of polymerase III, which are called Okazaki fragments. These fragments will require the action of another enzyme, ligase, in order to form a continuous DNA strand.
