Natural selection is the process by which individuals who are best suited to the environment tend to leave (on average) more offspring than others.
Evolutionary changes take place over many generations and through millions of years of natural selection. For the genes to survive, they must be among the strongest.
Answer:
The transfer of pollen to a stigma, ovule, flower, or plant to allow fertilization. It can be transferred by things that feed from what has pollen. Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Answer:
Genetic counseling
Explanation:
If an individual suspected an inherited disorder(usually dangerous) in the parents, or partner's family and wish to <u>find out or investigate the pattern of inheritance,</u> or t<u>he likelihood of manifesting this conditions later in life</u>,<u> or the chances of the partner passing this down to their offspring</u>, then the expert to visit is a genetic Counsellor, while the term to describe the genetic enquires is called genetic counseling. The Counsellor also provides the necessary emotional support that the investigator may need after the discovery.
<u>Besides the above reason, Genetic counseling is also important for</u>
1.How and when to plan a baby ,if the birth is suspetabe to a disorder
2.the type of genetic screening test to go for,
3. how to protect the child and the mother during pregnancy,incase a disorder is already present,
4. to understand family history and to secure the future of the marriage.
5. the necessary safety and curative measures to give the child after birth.
Genetic Counsellors are certified expert with additional master degree in Genetic counseling.
Explanation:
These are 5 inverted cut bottles with different soils:
(Gravel, Sand, Loam, Clay, and Peat)
- The piece of cloth is tied at the mouth of the bottle to let out water at the same rate as the piece of cotton wool in the previous diagram.
- Soil that is very porous holds very little water and therefore allows too much water to pass through it.
- From the above, gravel has very large particles,it allows too much water to pass through it meaning it holds little water.
- Peat has more fine particles than Clay Soil, hence holds more water than Clay. It therefore allows very little water to pass through it.