IAIB (4)
No, recessive alleles are equally likely to be inherited (if your dealing with only those two types of alleles). BUT, dominant alleles are the ones that show up. That is precisely why they are called dominant. Compared to recessive alleles, dominant ones will overrule the others, making it the one inherited.
Some traits, such as eye color and hair color, have multiple alleles that control different aspects of the phenotype. Because there are multiple different possible combinations of alleles, you get a wide range of phenotypes.
Alleles are different types of a gene. Each gene controls a characteristic and they is usually a recessive allele and a dominant one. The main similarity is that they both control a certain characteristic!
Recessive alleles are only expressed in the phenotype if the organism is homozygous for the recessive allele (assuming diploidy). If the trait is sex-linked, then it will always show up in males if passed.
The standard for comparison in a experiment is known as a control variable. This is useful to any experiment and serves as a reference point used to draw conclusions.
To test for heterozygosity, the control bulls should have a homozygous genotype. Using two bulls with the same homozygous genotype would be ideal for comparison when looking for heterozygosity.
alleles
The presence of more than two alleles that control a trait is called multiple allele. An example of this is the group gene of ABO blood that has three alleles.
There are three alleles, the dominant, uppercase 'T', and recessive, 't'. There is also codominance, which is when two separate alleles neither control and create something entirely diffierent ie: Straight haid allels, 'S', and curly hair allele, 'C', create wavy hair. The correct answer to this question is: Heterozygot. An organism with the same alleles at a gene locus is called a Homozygot. Hetero- often meaning "different" as in "Heterosexual -> different sex attraction " and "Homo-" often meaning "same" as in "homosexual -> same sex attraction".
2
Yes, alleles are variations of a gene that can affect the phenotype of an organism. The combination of alleles an individual carries determines specific traits or characteristics that are expressed.
This phenomenon is known as multiple allelism, where there are more than two different variations of a gene (alleles) that can affect a single trait. In this case, individuals can inherit one of several possible alleles for the trait. Examples include the ABO blood group system in humans, where there are three alleles (IA, IB, i) that determine a person's blood type.
Genotypes control different physical characteristics. For example, Hair Color, Eye Color, etc.
Alleles
One dominate, one recessive
Two or more genes which control the same characteristic.
Dominant and Recessive Alleles Diploid organisms typically have two alleles for a trait. When allele pairs are the same, they are homozygous. When the alleles of a pair are heterozygous, the phenotype of one trait may be dominant and the other recessive.