Homozygous vs. Heterozygous
The concept of homozygous and heterozygous gene pairs is very
important when having a child. Due to the fact that a child receives a gene from
both his/her mother and father, there are multiple outcomes in which different
traits area visible in that child.
When a child is considered homozygous, they have received the same exact
gene from both parents. There are two types of homozygous traits, homozygous
dominant and homozygous recessive. When a person is homozygous recessive, they
have inherited a recessive gene from both the mother and the father. A recessive
gene is a gene that normally would not appear visible in a person with that
gene. The exception to recessive genes lying undetectable is when the child
receives the same recessive gene from both parents and, thusly, is homozygous
recessive. When a person is homozygous dominant, however, they have received a
dominant gene from both parents. As with a homozygous recessive person, the
genes are exactly alike. The only difference between homozygous dominant and
homozygous recessive is the fact that the genes given for a homozygous dominant
trait would appear evident even in a heterozygous gene pair.
When a child is considered heterozygous, they have received a different
gene from each parent and, thusly, only show the trait that is dominant.
Although the child will only display what trait is considered dominant, the
recessive trait will lay ‘dormant’ within their genetic structure and can be
passed down to their offspring as well.
important when having a child. Due to the fact that a child receives a gene from
both his/her mother and father, there are multiple outcomes in which different
traits area visible in that child.
When a child is considered homozygous, they have received the same exact
gene from both parents. There are two types of homozygous traits, homozygous
dominant and homozygous recessive. When a person is homozygous recessive, they
have inherited a recessive gene from both the mother and the father. A recessive
gene is a gene that normally would not appear visible in a person with that
gene. The exception to recessive genes lying undetectable is when the child
receives the same recessive gene from both parents and, thusly, is homozygous
recessive. When a person is homozygous dominant, however, they have received a
dominant gene from both parents. As with a homozygous recessive person, the
genes are exactly alike. The only difference between homozygous dominant and
homozygous recessive is the fact that the genes given for a homozygous dominant
trait would appear evident even in a heterozygous gene pair.
When a child is considered heterozygous, they have received a different
gene from each parent and, thusly, only show the trait that is dominant.
Although the child will only display what trait is considered dominant, the
recessive trait will lay ‘dormant’ within their genetic structure and can be
passed down to their offspring as well.
Dihybrid vs. Monohybrid
When trying to figure out a child’s possible traits, it is essential to know about
dihybrids and monohybrids. When a child inherits genes from their parents
for certain traits, This system is pivotal in the overall outcome of the child.
The difference between the two is very simple. When the inheritance is a
monohybrid cross, the child is inheriting one trait from each parent. This means
that they will only be inheriting genes related to one trait, such as skin
color. With a monohybrid cross, however, the child is inheriting two genes from
each parent pertaining to different traits, such as skin color and eye color.
As an example, pea plants are a common choice. In a monohybrid cross, a
pea plant’s genes would affect one trait, for instance its height.
In this cross we would have a pennant square like this: (T: Tall t:Short)
An example of a dihybrid cross using the same pea plants, but crossing
height and color of flower. This would produce a punnant square that
looks like this:
(T:Tall t:Short G:Green
g:yellow)
dihybrids and monohybrids. When a child inherits genes from their parents
for certain traits, This system is pivotal in the overall outcome of the child.
The difference between the two is very simple. When the inheritance is a
monohybrid cross, the child is inheriting one trait from each parent. This means
that they will only be inheriting genes related to one trait, such as skin
color. With a monohybrid cross, however, the child is inheriting two genes from
each parent pertaining to different traits, such as skin color and eye color.
As an example, pea plants are a common choice. In a monohybrid cross, a
pea plant’s genes would affect one trait, for instance its height.
In this cross we would have a pennant square like this: (T: Tall t:Short)
An example of a dihybrid cross using the same pea plants, but crossing
height and color of flower. This would produce a punnant square that
looks like this:
(T:Tall t:Short G:Green
g:yellow)