Just before a cell divides, chromatin condenses into these
What is a chromosome?
Sections of DNA within a chromosome that code for a certain protein or characteristic
What is a gene?
the four phases of mitosis in order
Prophase, Metaphase, Anaphase, Telophase
The physical expression of a trait
What is phenotype?
A characteristic that is expressed even in the presence of a recessive allele of the gene that codes for that characteristic
Dominant trait
2 identical halves of a duplicated chromosome
What is a chromatid?
The passing of traits from one generation to another
What is heredity?
This process results in 2 identical daughter cells with the same ploidy
What is mitosis?
The genetic make up of an individual organism, especially regarding its particular combination of alleles for a specific trait
What is a genotype?
An example RR
Homozygous dominant
Where chromatids are joined together
What is a centromere?
having only a single set of chromosomes
haploid
This process results in haploid cells or 4 genetically different cells
What is meiosis?
a diagram that is used to visualize genetic crosses
What is a punnett square?
An example is Rr and the R allele is expressed phenotypically
Heterozygous Dominant
process of cell growth that leads to cell division for many cells
What is the cell cycle?
referring to a pair of chromosomes that carry the same genes in the same order on each chromosome
What is homologous?
Phase in meiosis in which crossing over occurs?
What is Prophase I?
Image of ordered chromosomes
What is a karyotype?
A type of inheritance in which different alleles of a gene are expressed simultaneously, producing a phenotype that exhibits contributions from both alleles
What is co-dominace?
The process at the end of the cell division in which the cytoplasm of a cell is divided between two new daughter cells.
What is cytokinesis?
One of a pair of genes that have the same position on homologous chromosomes and code for the same trait, though each may code for a different form of a trait
What is an allele?
The phase in mitosis in which the 2 chromatids are pulled toward the centrosomes
What is anaphase?
a heredity chart that tracks the expression of a trait through several generations
What is a pedigree?
A type of inheritance in which different alleles of a gene are neither dominant or recessive and are expressed simultaneously, resulting in a blended, usually intermediate phenotype
What is incomplete dominance?