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Some alleles are neither dominant or recessive and many traits are controlled by what?
Each person has two alleles of one particular gene, which controls one particular characteristic, such as a person's blood group. An allele may be either dominant, recessive, or codominant. A dominant allele would dominate the other allele in the chromosomes, meaning only the dominant allele would contribute to an organism's characteristics. An example of this is the A blood group, which is dominant to the O allele. However, if an individual has both A and B alleles, A and B are codominant, as they both exhibit effects on an organism's characteristics (the blood group). This results in an AB blood group - a combination of the effects of two genes!
Which of the following statements are true about culture shock?
It is real and may have physical effects
All of the following question are testable in a scientific exploration about changes to earth surface EXCEPT?
How can the effects of wind and water erosion be measured
Which one of the following is a source of chemical weathering a The abrasion of running water b water freezing in the cracks of exposed rocks c the effects of acid from decaying animals d the growth?
C. The effects of acid from decaying animals
A scientist is studying the effects of sunlight on rose bushes. Which of the following is a testable question about this topic?
Does more sunlight make rose bushes grow taller
What happens to the recessive allele in a heterozygous offspring?
In a heterozygous offspring, the recessive allele is present but not expressed because the dominant allele masks its effects.
What are alleles and what are the two forms?
Alleles are different versions of a gene that can code for different traits. The two forms of alleles are dominant and recessive. Dominant alleles mask the effects of recessive alleles when present together in an individual's genotype.
What makes dominant alleles different from recessive alleles?
It's in the word! Dominant means bigger or stronger or greater. So the dominant allele is the stronger gene that is going to show whereas the recessive allele is still in you, but is overshadowed by the dominant allele.
What is a dominant allele called dominant'?
A dominant allele is called dominant because its effects will be expressed in the phenotype when present in the genotype, regardless of whether the individual has one or two copies of the allele.
What does dominant pedigree means?
A dominant pedigree refers to a pattern of inheritance in which a dominant allele on a gene is expressed in the phenotype of an individual, masking the effects of a recessive allele. This results in the dominant trait being exhibited in individuals who inherit at least one copy of the dominant allele.
Are organisms with alleles BB recessive or dominant?
Organisms with alleles BB are considered homozygous dominant. This means that the dominant allele (B) is expressed in the phenotype. Dominant alleles mask the effects of recessive alleles in heterozygous individuals.
Acute health effects can be characterised by which of the following statements?
Immediate effects
What is caused by a dominant allele located on an autosome?
A dominant allele located on an autosome will be expressed phenotypically in the individual, meaning it will be visible in the physical characteristics of the organism. This dominant allele will mask the effects of any recessive allele at the same locus.
How does alcoholism affect offspring?
Alcoholism can have a number of negative effects among offspring. They include a disruptive family life, violence, lower income, broken home, etc.
Can 4 recessive genes make a dominant gene?
No, the presence of 4 recessive genes cannot result in a dominant gene. Dominant genes are expressed when at least one copy of the dominant allele is present, masking the effects of any recessive alleles.
Why is a dominant allele called dominanat?
A dominant allele is called dominant because it expresses its trait even when only one copy is present in an individual's genotype. This means that if an individual has one dominant allele and one recessive allele for a particular gene, the dominant trait will be observed in the phenotype. This characteristic allows dominant alleles to mask the effects of recessive alleles, leading to the trait associated with the dominant allele being the one that is visibly expressed.
What are the effects of domestic violence in relationship to economic inequality?
it shows that the abuser tries to be the more dominant in the relationship.
