Genetics Vocab

38 terms by tina_seiler22 

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Science Test Vocabulary to Know

Cell Cycle

The regular sequence of growth and division that cells undergo

Chromatin

...

Phenotype

An organism's physical appearance or visible traits

Gene

The set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait

Punnett Square

A chart that shows all the possible combinations of alleles that can result from a genetic cross

Recessive

An allele that is masked when a dominant allele is present

Cdominance

A condition in which neither of two alleles of a gene is dominant or recessive

Traits

A characteristic that an organism can pass on to its offspring through its genes

Heredity

The passing of traits from parents to offspring

Allele

The different forms of a gene

Mitosis

The stage of the cell cycle during which the cell's nucleus divides into two new nuclei and one copy of the DNA is distributed into each daughter cell

Interphase

The stage of the cell cycle that takes place before cell division occurs

Adenine

...

Guanine

...

Purebred

The offspring of many generations that have the same traits

Mendel

...

Egg Cell

...

Sex Cell

...

Carrier

A person who has one recessive allele for a trait, but does not have the trait

Chromosome

A doubled rod of condensed chromatin; contains DNA that carries genetic information

Chromatid

...

Genotype

An organisms genetic makeup, or allele combinations

Pedigree

A chart or "family tree" that tracks which members of a family have a particular trait

Dominant

An allele whose trait always shows up in the organism when the allele is present

Replication

The process by which a cell makes a copy of the DNA in its nucleus

Hybrid

An organism that has two different alleles for a trait; an organism that is heterozygous fora particular trait

Genetics

The scientific study of heredity

Homozygous

Having two identical alleles for a trait

Heterozygus

Having two different alleles for a trait

Cytokinesis

The final stage of the cell cycle in which the cell's cytoplasm divides , distributing the organelles into each of the two new cells

Meiosis

The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half

Thymine

...

Cytosine

...

Offspring

Product of reproduction, a new organism produced by one or more parents

Sperm Cell

the male reproductive cell

Sex Chromosomes

A pair of chromosomes carrying genes that determine whether a person is male or female

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