Rachel is in the first stage of prenatal improvement. Even though she doesn't know it, she is in the germinal stage of prenatal development. The germinal period of development takes place in the first two weeks after the conception. The creation of the fertilized egg takes place in the germinal period of the prenatal development.
Answer:
The advantage and disadvantage of UV exposure is listed below
Explanation:
Advantage
Ultraviolet radiation is used as sterilizing agent before culturing a bacteria of fungi in an autoclave.
Disadvantage
Ultraviolet radiation exposure can cause DNA damage by the formation of cyclobutane ring between two adjacent thymine residues known as thymidine dimers along a DNA strand.
Ultraviotel exposure can cause skin cancer.
Answer:
Cell membrane
Explanation:
The cell membrane supports and protects the cell. It controls the movement of substances in and out of the cells. It separates the cell from the external environment. The cell membrane is present in all the cells.
Answer:
The correct answer is: homologous chromosomes.
Explanation:
Diploid species like us humans have two sets of the same 23 chromosomes: 1 set of chromosomes is inherited from our mother, the other set we inherit from our father, making up a total of 46 chromosomes in every somatic cell (sexual cells have only one set of chromosomes - they're haploid).
<u>Two chromosomes are </u><u>homologous</u><u> when they belong to the same pair and have the same genetic information, although they can have a few variations</u>. These variations from one homologous chromosome to the other are called<em> alleles</em> and represent the different phenotypic variables that can result from the same gene. If these alleles are different from one another, only one of them will express itself (there are a few exceptions, like blood type) as the organism will be heterozygous for this trait; if the alleles are the same, the individual will be homozygous for the trait.
This is the basis for Mendelian inheritance.
Answer:
The Newton's three laws of motion are Law of Inertia, Law of Mass and Acceleration, and the Third Law of Motion.
Explanation:
