18 Questions
What did Alfred Sturtevant use the frequency of recombination between gene pairs for?
Determining the distance between genes on the chromosome
In Morgan's experiments, which gene pair showed very low recombination?
White and yellow
What is the significance of genetic maps in relation to whole genome sequencing?
They provide a starting point for sequencing whole genomes
What did Morgan's student, Alfred Sturtevant, 'map' on chromosomes?
The position of genes based on recombination frequency
Which of the following traits did Mendel primarily study?
Traits with distinct alternate forms
In Morgan's experiments, which gene pair showed higher recombination?
White and miniature wing
What term is used to describe a plant that is heterozygous for genes controlling one character?
Monohybrid
What is the purpose of a test cross in genetics?
To determine the genotype of an organism showing a dominant phenotype
Why is it not possible to predict the genotypic composition of a tall plant by just looking at its phenotype?
The genotype could be TT or Tt without direct observation
When tall (TT) and dwarf (tt) plants produce gametes, how do the alleles of the parental pair separate?
Assort independently
In the context of genetic crosses, what is the result when a tall (TT) plant is crossed with a dwarf (tt) plant?
Heterozygous offspring
In a test cross, what type of organism is typically crossed with the recessive parent?
Organism showing a dominant phenotype
What did Mendel cross to perform a test cross in his experiments?
A tall plant and a dwarf plant
What is the probability of a gamete from a heterozygous Tt plant containing the 'T' allele?
50%
In Mendel's experiments, what does the Punnett Square help visualize?
Phenotypic ratios in offspring
Why did Mendel propose two general rules based on his observations on monohybrid crosses?
To consolidate his understanding of inheritance in monohybrid crosses
Which British geneticist developed the Punnett Square?
Reginald C. Punnett
What can be predicted about the genotype of the test organism from the progenies of a test cross?
Whether the organism is homozygous dominant or heterozygous
Test your knowledge on Mendel's test cross and how it helps in determining the genotype of tall plants in the F2 generation. Understand how the test cross helps in unraveling the genetic composition by crossing tall plants with dwarf plants.
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