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Breaking it down:
Hetero means different.
Homo means same.
Zygous refers to how similar two alleles are for a trait in an organism.
Use:
Heterozygous and homozygous are terms used to describe a cell determined on the status of its alleles for a trait.
You would describe a cell as Homozygous when both alleles for a given trait are the same. (Genotype example: YY,yy)
You would describe a cell as Heterozygous when both alleles for a given trait are different. (Genotype example: Yy)
In use:
A green sweet pea: Homozygous or Heterozygous?
Taking my knowledge of sweet peas, the color green is recessive in sweet peas while the color yellow is dominant.
Using your knowledge on recessive genotypes....
(Hint: A pea with a genotype of Yy would be yellow... Bigger hint: To have a recessive trait you would need two alleles from a recessive trait that are the identical; genotype yy)
Yep, you got it.
A green sweet pea would be Homozygous.
Why?
Because the color green is a recessive trait in sweet peas. To have a recessive trait shown, the cell would have to have two identical alleles of that recessive trait.
And what qualifies a cell as homozygous? When both alleles for a given trait are the same.
BINGO!
There you go.
I hope this helps.
~Monique G.
9th grade
CA, USA
What else can I help you with?
What is the difference between a homozygous dominant homozygous recessive and heterozygous individual?
They are the same
To determine if a particular plant is homozygous or heterozygous you would have to test cross with a what?
To determine if a plant is homozygous or heterozygous, you would need to test cross it with a homozygous recessive plant. If the offspring show the recessive trait, the original plant is heterozygous; if all offspring show the dominant trait, the original plant is homozygous.
What is crossing a homozygous dominant or homozygous recessive with a heterozygous?
There is a 50% chance of a homozygous dominant and a 50% chance of a heterozygous.
1 What is the difference between homozygous and heterozygous?
Homozygous refers to having two identical alleles for a trait, while heterozygous refers to having two different alleles for a trait. In other words, homozygous individuals have either two dominant or two recessive alleles, while heterozygous individuals have one dominant and one recessive allele.
If 240 plant offspring were produced from crossing two heterozygous plants how many would be homozygous?
Out of the 240 offspring, approximately 60 would be homozygous (25% of 240). This is because when two heterozygous plants are crossed (Aa x Aa), the Punnett square shows that 25% of the offspring will be homozygous dominant (AA), 50% will be heterozygous (Aa), and 25% will be homozygous recessive (aa).
Is asthma homozygous or heterozygous?
heterozygous
What are the genotype a of a homozygous and a heterozygous tall pea plant?
homozygous- TT; heterozygous- Tt :)
What genotype is Yy homozygous or heterozygous?
Yy is a heterozygous genotype. Homozygous would be YY or yy.
What genotype could be described as heterozygous?
Yes - Hh is heterozygous. HH is homozygous, and hh is homozygous.
What is the antonym for heterozygous?
Homozygous
What is the probability of 2 heterozygous individuals producing a heterozygous recessive offspring?
The probability is 50%. There are four probabilities: dominant homozygous, recessive homozygous, or heterozygous.
Is AA an homozygous or an heterozygous?
AA could be either homozygous or heterozygous, depending on whether the individual inherited the same allele (A) from both parents (homozygous) or different alleles (Aa) from each parent (heterozygous).
What crosses will only produce heterozygous offspring?
A cross between two individuals that are homozygous for different alleles will only produce heterozygous offspring. This is because each parent can only donate one type of allele, resulting in all offspring being heterozygous for that particular gene.
What is an allele that produce a trait in the heterozygous condition is?
homozygous
What is the probability of offspring for 2 heterozygous dogs?
There are 3 probabilities: dominant homozygous, recessive homozygous, or heterozygous.
What term defines alleles that are different?
Heterozygous
Is the BB genotype heterozygous or homozygous?
Heterozygous
