A. is slowed by limiting factors. B. exhibits a period of rapid growth as the population size increases. ... Like logistic growth, exponential growth can be plotted in the shape of an S curve.
Crossing over (exchange of genetic information between regions of non-sister chromatids in the tetrad) occurs in the prophase I stage of meiosis.
<h3>WHAT IS MEIOSIS?</h3>
Meiosis is the process whereby a single cell produces four daughter cells that are genetically different from one another.
Meiosis is able to ensure genetic diversity in the daughter cells due to a process called Crossing over.
Crossing over is the exchange of genetic material between the non-sister chromatids of homologous chromosomes. It occurs in the prophase I stage of meiosis.
Therefore, crossing over (exchange of genetic information between regions of non-sister chromatids in the tetrad) occurs in the prophase I stage of meiosis.
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Blood enter the right atrium of the heart via the vena cava (superior and inferior)
The right atrium contracts to push the blood into the right ventricle through the triscupid valve
The contraction of the right ventricle pushes the blood through the pulmonary valve to the pulmonary artery which carries it to the lungs to be oxygenated
After oxygenation, the pulmonary vein brings blood to the left atrium
Contraction of the left atrium pushes the blood through the mitral valve into the left ventricle
The left ventricle contracts to push the blood through the aortic valve, into the aorta, which carries the blood through the body.
The genes, which are part of DNA, contain the<u> genetic information</u> inherited from the parents determine the traits of an organism.
The ‘complete set of all the genes and the DNA’ is called the genome which stores the entire set of information of how an organism is structured and maintained.
The pattern of dominant and/or recessive traits and the genetic variations are determined by the allelles.
Explanation:
The genetic codes in the genes represent the particular amino acid codes and their linkages specific to particular protein. The amino acids link together to form long polypeptide chains of protein molecules.
These proteins determine various traits through various roles like:
Messenger proteins: Hormones like insulin, estrogen etc., control and coordinate various functions of the body
Pigments: Like melanin determines the color of the hair, skin, eyes.
Structural protein: Like keratin gives structure of hair, nails; myosin determines muscle structure
Antibodies: Determine the immunity of a person
Ion channel proteins, messenger proteins, structural proteins, receptor proteins etc.: Determine various physiological traits.
