Genetics Basics

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Q. In a genetic experiment, a plant with genotype AaBb is crossed with another plant of genotype Aabb. What is the probability of obtaining an offspring with genotype Aabb?
  • A. 1/4
  • B. 1/2
  • C. 3/4
  • D. 1/8
Q. In a genetic study, if a trait is controlled by a single gene with two alleles, where one allele is completely dominant over the other, what is the expected genotypic ratio in the offspring of a monohybrid cross?
  • A. 1:2:1
  • B. 3:1
  • C. 1:1
  • D. 9:3:3:1
Q. In a genetic study, if a trait is controlled by a single gene with two alleles, how many different genotypes can be formed from two heterozygous parents?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. In a genetic study, if a trait is controlled by a single gene with two alleles, where one allele is completely dominant over the other, what type of inheritance pattern is this?
  • A. Codominance
  • B. Incomplete dominance
  • C. Complete dominance
  • D. Polygenic inheritance
Q. In a population of rabbits, black fur (B) is dominant over white fur (b). If two heterozygous black rabbits (Bb) are mated, what is the expected phenotypic ratio of their offspring?
  • A. 1:1
  • B. 3:1
  • C. 2:1
  • D. 1:2:1
Q. In a population of rabbits, the allele for black fur (B) is dominant over the allele for white fur (b). If 64% of the rabbits are black, what is the frequency of the recessive allele (b) in the population?
  • A. 0.36
  • B. 0.64
  • C. 0.25
  • D. 0.5
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