Allele frequency
... somatic cells (e.g. two loci in the cells of
diploid species, which contain two sets of chromosomes) ... which there may be one or many.
Note that for
diploid genes, however, the proportion of individuals ... copies of the allele). So all together 36% of
diploid individuals would be expected to carry an allele ...
Cell growth
... used for a special cell reproduction process of
diploid organisms. It produces four special daughter ... DNA, often symbolized as N . Meiosis is used by
diploid organisms to produce haploid gametes. In a
diploid organism such as the human organism, most cells ...
Chromosome
... have somatic cells (body cells), which are
diploid [2n] (they have two sets of chromosomes, one ... Gametes are produced by meiosis of a
diploid germ line cell. During meiosis, the matching ... a female gamete merge ( fertilization ), a new
diploid organism is formed.
Figure 3 : ...
Ploidy
... within an organism. In humans, most cells are
diploid (containing one set of chromosomes from each ...
1 Haploid
2
diploid
3 Haplodiploidy
4 Haploidisation
5 ... and other algae switch between a haploid and a
diploid or polyploid state, with one of the stages ...
Gamete
... two complete sets of chromosomes and therefore
diploid . The zygote cell receives one set of ... of producing gametes. Gametes from a mature
diploid individual will be produced in the gonadal tissue ... to one (i.e., produces haploid gametes).
The
diploid somatic cells of an individual will contain one ...
Ploidy
... within an organism. In humans, most cells are
diploid (containing one set of chromosomes from each ...
1 Haploid
2
diploid
3 Haplodiploidy
4 Haploidisation
5 ... and other algae switch between a haploid and a
diploid or polyploid state, with one of the stages ...
Meiosis
... . It is a form of nuclear division by which a
diploid parent produces four haploid daughter cells. ... fusion of the gametes would not result in a
diploid condition (2n) but 4n. Meiosis also provides ... variation. The reduction of chromosomes from the
diploid to the haploid condition separates alleles so ...
Trait
... of traits
3 Genetic origin of traits in
diploid organisms
4 Mendelian expression of genes in
diploid organisms
5 Biochemistry of dominance and ... energy state .
Genetic origin of traits in
diploid organisms
The heritable unit that may produce ...
Cell division
... mitosis , followed by division of the cell, called cytokinesis . A
diploid cell may also undergo meiosis to produce haploid cells, usually four. ... cells serve as gametes in multicellular organisms, fusing to form new
diploid cells.
Multicellular organisms replace worn-out cells through cell ...
Hardy-Weinberg principle
... genetic drift )
sexually reproducing
randomly mating
diploid
and experience:
no selection
no mutation
no migration ... than two copies of each chromosome. Consider again only two alleles. The
diploid case is the binomial expansion of:
( p + q ) 2
and ...
Allele
... be several different versions of the gene. One version might result in red petals, while another might result in white petals.
Some organisms are
diploid - that is, they have paired homologous chromosomes in their somatic cells , and thus contain two copies of each gene. An organism in which both ...
Eukaryote
... of sexual reproduction, typically involving an alternation between haploid generations, where only one copy of each chromosome is present, and
diploid generations, where two are present, occurring through nuclear fusion (syngamy) and meiosis . There is considerable variation in this pattern, ...
Fungus
... move from one mycelium into the other, forming a heterokaryon (meaning different nuclei). This is called plasmogamy . Actual fusion to form
diploid nuclei is called karyogamy , and may not occur until sporangia are formed.
In the Zygomycota , the heterokaryon produces multiple fruiting ...
Gene
... on the Y chromosome .
Many species carry more than one copy of their genome within each of their somatic cells . These organisms are called
diploid if they have two copies, or polyploid if they have more than two copies. In such organisms, the copies are practically never identical. With ...
Heterozygote
... Heterozygote cells are
diploid or polyploid and have different alleles at a locus (position) on homologous chromosomes . When an organism is referred to as a ...
Homozygote
... Homozygote cells are
diploid or polyploid and have the same alleles at a locus (position) on homologous chromosomes .
When an organism is referred to as being ...
Locus
... locus is the position of a gene (or other significant sequence) on a chromosome . A locus can be occupied by any of the alleles of the gene.
diploid or polyploid cells are either homozygous (have the same allele at a locus) or heterozygous (have different alleles at a locus).
In ...
Plant
... remain small throughout their life-cycle. This involves an alternation between two generations: a haploid stage, called the gametophyte , and a
diploid stage, called the sporophyte . The sporophyte is short-lived and remains dependent on its parent.
Vascular plants first appeared during the ...
Plant
... remain small throughout their life-cycle. This involves an alternation between two generations: a haploid stage, called the gametophyte , and a
diploid stage, called the sporophyte . The sporophyte is short-lived and remains dependent on its parent.
Vascular plants first appeared during the ...
Zygote
... . That is, two haploid cells—usually (but not always) a sperm cell from a male and an ovum from a female —merge into a single
diploid cell called the zygote .
Animal zygotes undergo mitotic cell divisions to become an embryo . Other organisms may undergo meiotic cell ...