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The genotype of the tall pea plant is heterozygous
F1 cross is the crossing that takes place at the first filial generation before the second filial generation.In this crossing,two homozygous parents are crossed together to get one homozygous offspring and three heterozygous offspring which will give a phenotypic ratio of 3:1. First filial generation is also the phase where the production/crossing started.I hope i av been able to answer your question to my own knowledge as a baby microbiologist
It creates heterozygous offspring. For example - the cross RRDD X rrdd would be expected to produce 100% RrDd offspring. This is because the only gamete produced by the first parent would be RD, and the only gamete produced by the second parent would be rd.
Homozygous for tall is TT Homozygous for short is tt All F1 offspring from this cross are Tt which makes them genotypically heterozygous and phenotypically tall.
A cross between two homozygous parents will form a 100 percent chance of a heterozygous offspring. One homozygous parent must have the dominant allele, and the other must have the recessive allele. So, if the circumstances are correct, these characteristics will make for a 100 percent chance of a heterozygous offspring.
You get one homozygous dominant (TT), one homozygous recessive (tt), and two heterozygous (Tt).
They R pretty wierd!
3
The genotype of the tall pea plant is heterozygous
25%
The F1 (first filial) generation is always 100% heterozygous.This is because the F1 generation is defined as the offspring of pure-breeding (homozygous) parents carrying different alleles from each other, e.g. AA x aa. All the offspring must be Aa, in other words heterozygous.
F1 cross is the crossing that takes place at the first filial generation before the second filial generation.In this crossing,two homozygous parents are crossed together to get one homozygous offspring and three heterozygous offspring which will give a phenotypic ratio of 3:1. First filial generation is also the phase where the production/crossing started.I hope i av been able to answer your question to my own knowledge as a baby microbiologist
By the process of hybridization, breeders cross two genetically different organisms. The purpose is to have the best traits of both parents.
A cross between a homozygous recessive and an individual of unknown genotype is called a test cross.The homozygous recessive can only pass on a recessive allele to the offspring, and so any recessive in the other parent will show up in the phenotype (detectable characteristics) of some of the offspring.
All the offspring will be heterozygous with a phenotype showing the dominant trait. Let the alleles be H (dominant) and h (recessive). All the gametes from the first individual will be H, and from the other, h. Thus all the offspring must be Hh.
Any cross of parents for a single trait where the dominant allele completely masks any expression of the recessive allele as follows:Parents are both heterozygous for the trait. For example Aa X Aa produces 75% of offspring with the dominant phenotype and 25% with the recessive phenotype.One parent is heterozygous for the trait and the other parent is homozygous recessive. For example: Aa X aa produces 50% offspring with the dominant phenotype and 50% offspring with the recessive phenotype.If the trait is co-dominant/non-dominant a heterozygote would have the median characteristic and a homozygote could be either of two phenotypes. If T is tall and t is short the Tt offspring would bemedium in this example. The way to produce offspring with only two phenotypes would be to cross a heterozygous parent with a homozygous parent. For Example:Tt X tt cross would produce 50% tt (short) offspring and 50% Tt (medium) offspring. A TT X Tt cross would produce 50% TT (tall) offspring and 50% Tt (medium) offspring.