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Cell Division

Across
The expressed traits of an organism- observable traits
A variant of a character found within a population, such as purple flowers in pea plants
The region of a chromosome where two sister chromatids are joined and where spindle microtubules attach during mitosis and meiosis.
The genetic makeup of an organism
The combination of DNA and proteins that constitutes chromosomes
An ancestral species and all its descendants, a distinctive branch in the tree of life
A unit of inheritance in DNA consisting of a specific nucleotide sequence that programs the amino acid sequence of a polypeptide
One of the two identical parts of a duplicated chromosome
The two chromosomes that make up a matched pair in a diploid cell.
A three nucleotide sequence in mRNA that specifies a particular amino acid, the basic unit of the genetic code.
A haploid egg or sperm
Containing two sets of chromosomes in each cell, one set inherited from each parent, referring to a 2n cell
A major terrestrial or aquatic life zone, characterized by vegetation type or physical environment.
The process of cell division that produces haploid gametes from diploid cells
A stage of mitosis during which sister chromatids split apart, separate from each other, and move to opposite sides of the cell.
A form of genetic inheritance in which a heterozygous individual displays the traits of both alleles.
Down
An individual who is heterozygous for a recessively inherited disorder and who therefore does not show symptoms of that disorder.
The portion of the cell cycle in eukaryotes during which the cell is not dividing
A change in the nucleotide sequence of DNA
The complete set of genetic material of an organism or virus
The genetic material that organisms inherit from their parents; a double-stranded helical macromolecule consisting of nucleotide monomers.
An ordered sequence of events that extends from the time of eukaryotic cell is first formed from a dividing parent cell until its own division into two cells.
A gene-carrying structure found in the nucleus of a eukaryotic cell and most visible during mitosis and meiosis
The division of a single nucleus into two genetically identical daughter nuclei
Containing a single set of chromosomes
An alternative version of a gene
Having two identical alleles for a given gene
The last stage of the cell cycle during which the cytoplasm is divided and distributed to two new offspring cells.
A stage of mitosis during which duplicated chromosomes line up at the center of the cell with each chromosome attached to the mitotic spindle
A protein that speeds a reaction, but is not itself changed in the reaction
The fertilized egg, which is diploid, that results from the union of haploid gametes during fertilization