Answer:
Some factors that may cause a decrease in population size:
- a high mortality rate due to an infectious disease
- a low birth rate
- a high mortality rate due to interspecific competence
- a high emigration rate
Explanation:
In biology, population size (N) refers to the total number of individuals in a given population. The four main factors that affect population size are birthrate (natality), death rate, immigration rate (i.e., the number of individuals of a given species that move into a population), and emigration rate (i.e., the number of individuals of a given species that move out of a population). Both birthrate and immigration are known to increase N, while death rate and emigration are rates known to decrease this value.
Mitosis occurs when you get a cut or your body needs to repair something. Mitosis is asexual reproduction and helps repair and grow your skin cells.
Answer:
a)Monogamy
Explanation:
The above question shows an example of monogamy in the animal kingdom, where both males and females enjoy equal conditions and are very similar in appearance, size and behavior. Once they know each other, they will spend their entire lives accompanying each other, caring for and helping each other to raise the youngs, and helping each other in the struggle for survival.
Answer:
Transcription
Explanation:
This occurs in three steps itself: initiation, elongation, and termination
Initiation (beginning)
- RNA polymers bind to a promoter on a gene
- DNA then unwinds to be "read" by an enzyme
- DNA now ready to make mRNA strand
Elongation (Second step)
- nucleotides are added to mRNA strand
- mRNA molecule is built after RNA polymers reads the DNA that unwound
- adenine (A) in DNA connects to a uracil (U) of RNA while connected to each other
Termination (End)
- RNA will cross a stop sequence in the gene (termination)
- mRNA done and disconnects or detaches from DNA
Hope this helps!
Answer:
During mitosis, the two sister chromatids that make up each chromosome separate from each other and move to opposite poles of the cell.
Explanation:
This is shown in the figure below. Mitosis actually occurs in four phases. The phases are called prophase, metaphase, anaphase, and telophase.
