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In a heterozygous organism, one gene may be dominant while the other is recessive. The dominant gene expresses its trait, overshadowing the effect of the recessive gene, which does not manifest in the organism's phenotype. This relationship is a fundamental principle of Mendelian genetics, where the dominant allele can mask the presence of the recessive allele in a heterozygous pairing.
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What is the condition in which there's more than one dominant allele?
Codominance is when an organism has two different dominant alleles, so both of them are expressed.When an organism has two identical dominant alleles, it is homozygous.
Which punnett square shows the result of a cross between two heterozygous parents?
A cross between two heterozygous parents (eg. Gg X Gg) would result in a phenotypic ratio of 3 dominant : 1 recessive, and a genotypic ratio of 1GG:2Gg:1gg.GgGGGGggGggg
Sequences shows a decreasing level of complexity?
organism > organs > tissues > cells
What is a diagram that shows how energy in fod flows from one organism to another?
A food web is a diagram that shows how energy in food flows from one organism to another in an ecosystem. It depicts the transfer of energy through various trophic levels, from producers to consumers and decomposers. Each organism is shown within the web based on its feeding relationships with other organisms.
If 240 plant offspring were produced from crossing two heterozygous plants how many would be homozygous?
Out of the 240 offspring, approximately 60 would be homozygous (25% of 240). This is because when two heterozygous plants are crossed (Aa x Aa), the Punnett square shows that 25% of the offspring will be homozygous dominant (AA), 50% will be heterozygous (Aa), and 25% will be homozygous recessive (aa).
Which genotype shows an organism heterozygous for a single genes?
Aa
What is a genotype with one dominant and one recessive gene?
The genotype of a person with one dominate allele for a gene and one recessive would be expressed as Aa or Yy. You can use any letter you would like except one will be shown as a capital (dominate) and one as a lower case (recessive). This combination is heterozygous for that trait.
What is the genotype for a trait with a mixed pair of alleles?
PHENOTYPE = how the traitphysically shows-up in the organism. ...Heterozygous means one of each allele in the genotype (ex: Cc)
What is the form of gene that seems to have no impact on a trait in a heterozygous state?
A gene that shows no impact on a trait in a heterozygous state is called a recessive gene. In a heterozygous individual, the dominant gene will determine the trait expressed, while the recessive gene remains hidden.
What cross shows homozygous dominant mating with heterozygous?
AA (dominant) mating with aa (recessive) -----> Aa
What happens when an organism shows more than 2 alleles?
Then the organism is deformed
What is an organism that shows exponential growth?
Bacteria.
In what ways do incomplete dominance and codominance differ in terms of genetic inheritance?
Incomplete dominance and codominance are both types of genetic inheritance where neither allele is completely dominant over the other. In incomplete dominance, the heterozygous individual shows a blending of the two alleles, resulting in an intermediate phenotype. In codominance, both alleles are expressed fully in the heterozygous individual, leading to a phenotype that shows traits from both alleles distinctly.
What results when one allele is not dominant over the other?
When one allele is not dominant over the other, both alleles contribute to the phenotype in a form of incomplete dominance or codominance. In incomplete dominance, the heterozygous individual displays a phenotype that is a blend of the two alleles. In codominance, both alleles are expressed independently, resulting in a phenotype that shows traits from both alleles.
What is an allele that always shows up in an organism's phenotype called - an allele that masks the other allele?
An allele that always shows up in an organism's phenotype and masks the expression of another allele is called dominant. Dominant alleles are always expressed, even when paired with a recessive allele.
Does an organism that shows cephalization have a brain?
because f you thats why
What is the condition in which there's more than one dominant allele?
Codominance is when an organism has two different dominant alleles, so both of them are expressed.When an organism has two identical dominant alleles, it is homozygous.
