Explain how the resulting phenotypic ratios from Mendel’s dihybrid cross assisted him in framing his Second Law. What will be an ideal response?
ANSWER: Mendel explained the results of his cross involving two traits by assuming that alleles of one
gene pair segregate into gametes independently of the alleles belonging to other gene pairs,
resulting in gametes containing all combinations of alleles. This second fundamental
principle of genetics is called the principle of independent assortment or Mendel’s Second
Law.
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This bacterium is unique in that it does not possess a flagellum but is motile by gliding motility
a. Acidovorax spp. b. Sphingobacterium spp. c. Spingomonas spp. d. Pseudomonas spp.
Both gram-positive and gram-negative cells have outer membranes.
Answer the following statement true (T) or false (F)
Smells and food aromas often produce an intense emotional impact. What is the biological basis of this response?
What will be an ideal response?
Two alleles of gene C control hair color in horses: C¹ and C². Horses homozygous for allele C¹ are red, heterozygotes are yellow, and C² homozygotes are cream. What type of allele interaction is described?
A) pleiotropy B) complete dominance C) incomplete dominance D) recessive lethality E) codominance