Answer:
maternal and paternal chromosomes sort independently
Explanation:
Alleles for a gene are present on a particular locus on homologous chromosomes. Meiosis includes the pairing of homologous chromosomes and their segregation of opposite poles. One member of a homologous pair is paternal and the other is inherited from mother.
The random arrangement of homologous chromosomes at the equator of the cell during metaphase I result in independent segregation of paternal and maternal chromosomes to opposite poles during anaphase I. This leads to new combinations of traits in the progeny which were otherwise not present in either parent.
Answer:
Biological membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment; and (3) they separate vital but incompatible metabolic processes conducted within organelles.
Answer:
why are The more variation a population has, the better its ability to adapt to changes in its environment through natural selection. If there is more variation, the odds are better that there will be some alleles already present that allow organisms to survive and reproduce effectively under the new conditions
Explanation:
B. carbon
C. hydrogen
D. oxygen
Answer:
Carbon atoms B.
Explanation:
The atoms of an organic molecule are typically organized around chains of carbon atoms. Inorganic compounds make up 1%–1.5% of a living cell's mass. They are small, simple compounds that play important roles in the cell, although they do not form cell structures
2) Tetany
3) relaxation
4) repolarization
Answer:
Tetany
Explanation
The refractory period in the heart refers to the shortest interval between consecutive contraction conducted impulses out of the cardiac muscle.
It is important because it allows adjustments to stimuli and limits amount of action potential sent per minute.
Without a plateau extending the refractory period in the cardiac muscles.
Sarcomeres might be stimulated to contract instead of relaxing leading to sustained contraction also called Tetany.
Tetany is an involuntary muscle cramp or contraction caused by overly stimulated nerves.
Answer:
definitely low infant mortality rate
Explanation:
The elevator at a factory moves materials around the building.
The boss at a factory gives out orders and directions.
The boxes at a factory are used to ship materials to customers.
O
Answer:
The boss at a factory gives out orders and directions.
Explanation:
The nucleus is an organelle that is enclosed by nuclear membrane and carry genetic material in eukaryotic cells.
The role of nucleus is to monitor and control the functioning of different activities such as growth and metabolism of the cell and also transfers the hereditary information. Likewise boss of a factory gives out orders and directions to regulate the factory properly.
Hence, the correct option is "The boss at a factory gives out orders and directions."