GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
a phenomenon in which an individual gene influences multiple traits
|
|
|
the genes that an organism carries for a particular trait also collectively an organism’s genetic composition
|
|
|
describes the genotype of a trait for which the two alleles an individual carries differ from each other
|
|
|
None of the above
|
Detailed explanation-1: -Heterozygous refers to having different alleles for a particular trait. If the two versions are different, you have a heterozygous genotype for that gene. The relationship between the two alleles affects which traits are expressed.
Detailed explanation-2: -(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
Detailed explanation-3: -Homozygous and heterozygous are terms that are used to describe allele pairs. Individuals carrying two identical alleles (RR or rr) are known as homozygous. While individual organisms bearing different alleles (Rr) are known as heterozygous.
Detailed explanation-4: -An organism that is heterozygous for a trait has two different alleles for that trait.
Detailed explanation-5: -An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive.