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Two types: A heterozygous parent (Aa) and a homoygous recessive parent (aa) can produce phenotypically dominate and phenotpically recessive offspring (with 50% genotypes Aa and the other 50% aa). If the genes are co-dominate then the offspring can have blended traits and recessive traits phenotypically.
Generally, if the parents are heterozygous and one allele is dominant over the other there are only 2 phenotypes and 3 genotypes. Parents Aa can produce AA, Aa and aa offspring. If the heterozygous individuals have an intermediate phenotype, then three genotypes and 3 phenotypes are possible. If 2 traits are being studied using heterozygous parents AaBb then the possible Genotypes are AABB, AABb, AAbb, AaBB, AaBb, Aabb, aaBb, aaBB, aabb which is nine genotypes. But there are 4 phenotypes. AABB AABb AaBB AaBb are phenotypically the same. aaBb, aaBB are phenotypically the same. Aabb, AAbb are phenotypically the same. aabb
What is the ratio of heterozygous offspring to total offspring in the punnett square
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.
You can perform test crosses with individuals of known genotypes and analyse the offspring you get.
Two types: A heterozygous parent (Aa) and a homoygous recessive parent (aa) can produce phenotypically dominate and phenotpically recessive offspring (with 50% genotypes Aa and the other 50% aa). If the genes are co-dominate then the offspring can have blended traits and recessive traits phenotypically.
Generally, if the parents are heterozygous and one allele is dominant over the other there are only 2 phenotypes and 3 genotypes. Parents Aa can produce AA, Aa and aa offspring. If the heterozygous individuals have an intermediate phenotype, then three genotypes and 3 phenotypes are possible. If 2 traits are being studied using heterozygous parents AaBb then the possible Genotypes are AABB, AABb, AAbb, AaBB, AaBb, Aabb, aaBb, aaBB, aabb which is nine genotypes. But there are 4 phenotypes. AABB AABb AaBB AaBb are phenotypically the same. aaBb, aaBB are phenotypically the same. Aabb, AAbb are phenotypically the same. aabb
The probability is 50%. There are four probabilities: dominant homozygous, recessive homozygous, or heterozygous.
25%
Heterozygous induviduals pass the dominant and recessive alleles to offspring
Bb The phenotype is what the individual looks like. The genotype is the genetic material at the site that can be passed on even if it isn't expressed. For example: Animal with black hair bb (can only pass the black characteristic on to it's offspring because it is homozygous recessive). It is phenotypically black. An animal with red hair can be Bb or BB. Bb is heterozygous and the animal is phenotypically red. BB is homozygous dominant for red and the animal is phenotypically red. More information than requested but an explanation none the less.
What is the ratio of heterozygous offspring to total offspring in the punnett square
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.
There only certain crosses that will produce heterozygous offspring. These are heterozygous vs heterozygous, homozygous vs homozygous and heterozygous vs homozygous.
Heterozygous individuals pass the dominant and recessive alleles to offspring.
Heterozygous individuals pass the dominant and recessive alleles to offspring.
You can perform test crosses with individuals of known genotypes and analyse the offspring you get.