HEREDITY
MONOHYBRID CROSS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
height
|
|
|
the scar
|
|
|
ability to swim
|
|
|
ability to play drums
|
Detailed explanation-1: -An organism can be either homozygous dominant ( TT ) or homozygous recessive ( tt ). If an organism has two different alleles ( Tt ) for a certain gene, it is known as heterozygous (hetero-means different).
Detailed explanation-2: -Recessive alleles are denoted by a lowercase letter (a versus A). Only individuals with an aa genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait.
Detailed explanation-3: -A recessive gene is a weak form of a trait. Lower case letters represent these traits. It will only show up if the dominant form is not present.
Detailed explanation-4: -Dominant alleles are those that mask the effect of the recessive alleles when existing together in a gene. Therefore, the trait that remains hidden or masked is called a recessive trait.