In guinea pigs, the allele for black fur (B) is dominant over white fur (b). A cross of two black guinea pigs produces three offspring, all of which have black fur. What conclusion can be drawn about the genotypes of the two parent guinea pigs of the cross? A. Both parents were homozygous dominant (BB). B. At least one parent was homozygous dominant (BB), but the other parent could be heterozygous (Bb). C. Either parent could be homozygous dominant (BB) or heterozygous (Bb). D. Both parents were heterozygous (Bb). E. At least one parent was homozygous recessive (bb).
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Biology, 22.06.2019 01:30, ayoismeisalex
Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.
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Biology, 22.06.2019 07:00, Arden990560
Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.
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In guinea pigs, the allele for black fur (B) is dominant over white fur (b). A cross of two black gu...
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