What is the difference between monohybrid and dihybrid cross

In summary, a monohybrid cross is a genetic cross between two homozygous parents with different alleles for one trait, while a dihybrid cross is a genetic cross between two homozygous parents with different alleles for two different traits. In order for a cross to be a monohybrid or dihybrid, both parents must be homozygous for all traits involved. The provided image is a visual representation of this concept.
  • #1
rashida564
220
6
and if I have two plants the first one with a genotype of YyTT and the second one with a genotype of yyTT fertilise them this would be a monohybrid or dihybrid cross.
 
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  • #2
The definition of both monohybrid & dihybrid is 'cross between homozygous parents...'
So yyTT YYTT does not involve T because TT and TT are the same, YY is homozygous, yy is homozygous, this is one trait == monohybrid

So the answer to your question is: YyTT x YYTT is neither. It needs to be either yyTT x YYTT, or yyTT x yytt - homozygous only, no Yy and no Tt.
 
  • #3
http://imgur.com/a/S09aJ i read this thing
 
  • #4
i didn't understand it
 

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Related to What is the difference between monohybrid and dihybrid cross

What is the difference between monohybrid and dihybrid cross?

Monohybrid cross involves the mating of two individuals that differ in only one trait, while dihybrid cross involves the mating of two individuals that differ in two traits.

What is the purpose of monohybrid and dihybrid crosses?

The purpose of these crosses is to study the inheritance patterns of specific traits and to determine the genotypes and phenotypes of the offspring.

How are the genotypes and phenotypes of the offspring determined in a monohybrid cross?

In a monohybrid cross, the offspring will inherit one allele from each parent, resulting in two possible genotypes (heterozygous or homozygous) and two possible phenotypes (dominant or recessive).

What is the difference between dominant and recessive traits in monohybrid and dihybrid crosses?

In monohybrid crosses, dominant traits are expressed when an individual has at least one dominant allele, while recessive traits are only expressed when an individual has two recessive alleles. In dihybrid crosses, dominant traits are expressed when an individual has at least one dominant allele for each trait, while recessive traits are only expressed when an individual has two recessive alleles for both traits.

How do monohybrid and dihybrid crosses demonstrate Mendel's laws of inheritance?

Monohybrid crosses demonstrate Mendel's law of segregation, which states that each individual has two alleles for a trait and only one is passed on to the offspring. Dihybrid crosses demonstrate Mendel's law of independent assortment, which states that the inheritance of one trait is not influenced by the inheritance of another trait.

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