enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Zygosity - Wikipedia

    en.wikipedia.org/wiki/Zygosity

    The words homozygous, heterozygous, and hemizygous are used to describe the genotype of a diploid organism at a single locus on the DNA. Homozygous describes a genotype consisting of two identical alleles at a given locus, heterozygous describes a genotype consisting of two different alleles at a locus, hemizygous describes a genotype consisting of only a single copy of a particular gene in an ...

  3. Monohybrid cross - Wikipedia

    en.wikipedia.org/wiki/Monohybrid_cross

    Then carry out such a cross, each parent is chosen to be homozygous or true breeding for a given trait (locus). When a cross satisfies the conditions for a monohybrid cross, it is usually detected by a characteristic distribution of second-generation (F 2) offspring that is sometimes called the monohybrid ratio.

  4. Twin - Wikipedia

    en.wikipedia.org/wiki/Twin

    The human twin birth rate in the United States rose 76% from 1980 through 2009, from 9.4 to 16.7 twin sets (18.8 to 33.3 twins) per 1,000 births. [5] The Yoruba people have the highest rate of twinning in the world, at 45–50 twin sets (90–100 twins) per 1,000 live births, [6] [7] [8] possibly because of high consumption of a specific type of yam containing a natural phytoestrogen which may ...

  5. Sex-determination system - Wikipedia

    en.wikipedia.org/wiki/Sex-determination_system

    In rare instances, diploid individuals may be homozygous, these develop into sterile males. The gene acting as a csd locus has been identified in the honeybee and several candidate genes have been proposed as a csd locus for other hymenopterans.

  6. 105 Fun Facts About Science, History, Celebrities, and More - AOL

    www.aol.com/heres-103-fun-facts-actually...

    Ace trivia night with these cool and random fun facts for adults and kids. This list of interesting facts is the perfect way to learn something new about life. 105 Fun Facts About Science, History ...

  7. Dihybrid cross - Wikipedia

    en.wikipedia.org/wiki/Dihybrid_cross

    the 1 represents the homozygous, displaying both recessive traits: 1 x rryy; The genotypic ratio are: RRYY 1: RRYy 2: RRyy 1: RrYY 2: RrYy 4: Rryy 2: rrYY 1: rrYy 2: rryy 1; In the example pictured to the right, RRYY/rryy parents result in F 1 offspring that are heterozygous for both R and Y (RrYy). [4] This is a dihybrid cross of two ...

  8. Punnett square - Wikipedia

    en.wikipedia.org/wiki/Punnett_square

    The phenotype of a homozygous dominant pair is 'A', or dominant, while the opposite is true for homozygous recessive. Heterozygous pairs always have a dominant phenotype. [ 11 ] To a lesser degree, hemizygosity [ 12 ] and nullizygosity [ 13 ] can also be seen in gene pairs.

  9. Quantitative genetics - Wikipedia

    en.wikipedia.org/wiki/Quantitative_genetics

    This "poor" line was less homozygous than the "best" line; and it shared the same level of homozygosity, in fact, as the two second-best lines (k = 1, 5). The progeny line with both the "more" and the "less" alleles present in equal frequency (k = 4) had a mean below the overall average (see next paragraph), and had the lowest level of ...