Sexual reproduction occurs when the sperm from the male parent fertilizes an egg from the female parent, producing an offspring that is genetically different from both parents.
The cell enters the first phase of mitosis: prophase. The replicated chromosomes condense into shapes that resemble the letter X. The membrane around the nucleus starts to break down. Special structures called spindle fibers form
From there, the cell enters metaphase—the second phase of mitosis. Each chromosome attaches to a spindle fiber at its centromere (the middle of the chromosome). Chromosomes line up at the center of the cell. The next step is anaphase.
The last step is when the cell enters the last phase of mitosis—telophase. The chromosomes begin to uncoil and form chromatin. The spindle breaks down, and two new nuclei form. The cell membrane begins to close in, starting to split the cell into two.
Answer:
The correct answer is - codons.
Explanation:
Each mRNA is made up of the codons that are complementary to the DNA sequence during transcription and once it binds with the ribosome, mRNA strand codes are read by tRNA in triplet code that decides which amino acid would be bind to the ribosome during translation to synthesize the polypeptide chain. For instance, if mRNA has CCG codon then tRNA should have GGC anticodon should have bound.
Answer:
See explanation below.
Explanation:
Mitosis is the duplication of cells in the bodies of plants and animals. All cells can undergo mitosis. Mitosis benefits the body by replacing cells as needed. The skin for example loses a lot of cells. Mitosis is when cells reproduce - and results in an exact copy - to replace the cells that are lost or need to be replaced for other reasons.
Meiosis is the duplication of cells that are not alike. In Mitosis, the duplicate cells are an exact copy, with a full exact copy of the body's DNA. In Meiosis, the new cells are different in that each one has half of the DNA - or half the number of chromosomes. Meiosis allows for the creation of cells that allows for sexual reproduction. Meiosis is the process that creates sperm and eggs. These cells are known as haploid cells - in that other cells are known as diploid, with full DNA and cells that have gone through the meiosis process have half and are known as haploid cells.
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