What is a monohybrid cross and what is a dihybrid cross?

Answer 1

Monohybrid - A genetic cross made to examine the distribution of one specific set of alleles in the resulting offspring
Example: tall peas x short peas or TT x tt

Dihybrid - Hybridization using two traits with two alleles each.
Example: tall peas with round seeds x short peas with wrinkled seeds or TTRR x ttrr

Answer 2

Mendel's Mono Hybrid Cross: * it involves 1 characteristic like tallness and shortness. * 2nd step is to self pollinate the tall plant(TT) and pure short plant(tt) *now we'll get the first filial generation where we hv (TT) -pure tall(1) , (Tt)-hybrid(2) and (tt) - pure short(1)Mendel's Dihybrid Cross : * it involves 2 diff characters like tall plant with round seed and short plant with wrinkled seeds. *when we self pollinate the tall and round (TT)(RR) with the short and wrinkled with(tt)(rr) , we'll get the f1 or first filial generation. *the f1 generation has tall with round(TT)(RR)-(9) , short with wrinkled(tt)(rr)-(1) and hybrid (Tt)(Rr)-(6) * the ratio is 9:3:3:1.

Answer 3

A mono-hybrid cross occurs when each parent has a different allele for the same trait, as in tall (T) and short (t) for height. This results in the 1:2:1 or 1TT:2Tt:1tt genotypic segregation ratio in the F2 if the offspring is allowed to self. A di-hybrid results when each parent differs from the other for alleles of two traits. If a di-hybrid F1 is allowed to self, the normal genotypic ratio in the F2 population will be 9:3:3:1, or 9AABB:3A_bb:3aaB_:1aabb. See the following: http://www.Biology.Arizona.edu/mendelian_genetics/problem_sets/monohybrid_cross/monohybrid_cross.html Use this if original does not work: http://tinyurl.com/7h3djhttp://www.biology.arizona.edu/mendelian_genetics/problem_sets/dihybrid_cross/dihybrid_cross.html Use this if original does not work: http://tinyurl.com/22sakj

Answer 4

A monohybrid cross is the breeding of two organisms, each of which is homozygous for different phenotypes a particular, for example, male fruit fly who is homozygous for long wings (genotype LL) being crossed with a female who is homozygous for dumpy wings (DD). All the offspring will be heterozygous (LD), but will display the phenotype of the dominant trait. A dihybrid cross is a cross of two heterozygous individuals; in a dihybrid cross, there is a 25% chance that any given individual offspring will be homozygous for the dominant trait, a 50% chance that it will be heterozygous, and a 25% chance that it will be homozygous for the recessive trait.

Answer 5

1. monohybrid cross deals with one genotypic traits whereas dihybrid cross deals with two traits crossed to see their possible genotype