What are monohybrid crosses? Is it possible to make a cross in which only one single character is actually involved, or is it just that one single character is being analyzed and the others are being ignored?

You are trying to determine the relative positions of three genes (A, B and C) that are thought to be on the same chromosome of the organism. You do two dihybrid testcrosses with A being checked in both crosses (so A and B are the genes in one cross and A and C are the genes in the other cross). Based on the results below, which gene (B or C) is closer to A? How can you tell? AаBb aabb Aabb aaBb Total 300 299 202 199 1000 AaCc aacc Аасс aaCc 475 477 25 23 1000

Tall is dominant to dwarf. In determining stem height the offspring of a cross is as follows.  Half tall : Half dwarf. What are the genotypes of the parents used for this cross A) TT×tt B) Tt×tt C) Tt×Tt D) Tt

Give an example of a monohybrid cross and a dihybrid cross.

You are studying three linked genes in snapdragons. The flower color locus is in the center. There are 8.3 cM between the flower color locus and the plant height locus. There are 12.4 cM between the flower color locus and the leaf type locus. The coefficient of coincidence is 0.8. Pure-breeding tall, red-flowered plants with fuzzy leaves were crossed to pure-breeding dwarf, blue-flowered plants with smooth leaves. The F1 were testcrossed. Calculate the proportion of the testcross progeny that are expected to have red flowers and fuzzy leaves. Round properly to 4 decimal digits. Answer:

The order of the genes on a plant chromosome is A, B, C, where A and B are located 10 cM apart and B and C are located 3 cM apart. What is the probability that the trihybrid ABC/abc will produce any kind of recombinant gamete?

Consider the following cross: AaBbCcDdEe X AaBbCcDdEe. How many different phenotypes would you expect in the offspring from this cross? Number of phenotypes =

In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest number of different phenotypes? specify the phenotypes observed.

As a hypothetical example, a trait in mice results in abnormallylong tails. You initially have a true-breeding strain with normaltails and a true-breeding strain with long tails. You then make thefollowing types of crosses:Cross 1: When true-breeding females with normal tails arecrossed to true-breeding males with long tails, all F1 offspringhave long tails.Cross 2: When true-breeding females with long tails arecrossed to true-breeding males with normal tails, all F1 offspring have normal tails.Cross 3: When F1 females from cross 1 are crossed to true-breeding males with normal tails, all offspring have normal tailsCross 4: When F1 males from cross 1 are crossed to truebreeding females with long tails, half of the offspring havenormal tails and half have long tails.Explain the pattern of inheritance of this trait.

You would like to create new hybrid strains between various cereal grains of different ploidies. Which of the following crosses will yield a fertile hybrid? Select all correct answers. (note that tri=3, tetra=4, penta=5, hexa= 6, and octa=8) 0 0 0 0 pentaploid X triploid tetraploid X diploid octaploid X diploid hexaploid X diploid