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PSS 3421 Exam 1 Questions & Answers 2024/2025
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PSS 3421 Exam 1 Questions & Answers 2024/2025
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PSS 3421 Exam 1 Questions & Answers2024/2025
Mating two organisms produces a 3:1 ratio of the phenotype in progeny. The parental genotypes are -
ANSWERSAa x Aa
The physical appearance of an organism is known as - ANSWERSPhenotype
In plant reproduction process called *Double* Fertilization is when two sperm nuclei fertilize the OOcyte
*nucleus* and __________________ . - ANSWERSTwo polar nuclei
The mode of cell division which results in four daughter cells that are genetically different, with each cell
containing one haploid set of chromosomes, is known as - ANSWERSMeiosis
What will be the phenotype(s) of the F1 offspring of a true-breeding "fabulous" father and a true-
breeding "plain" mother (aabb)? - ANSWERSAll "fabulous"
Prokaryotes are organisms that - ANSWERSLack a cell nucleus or any other membrane-bound organelles
In Labrador retrievers, black coat color is dominant to brown. Suppose that a black Lab is mated with a
brown one and the offspring are 4 black puppies and 1 brown. What can you conclude about the
genotype of the black parent? - ANSWERSThe genotype must be Bb.
A genetically important event called crossing-over occurs during - ANSWERSProphase I
The chromatids in a pair of chromosomes are held together at a specific region of the chromosome
called the - ANSWERSCentromere
How many haploid gametes are formed from one cell during meiosis? - ANSWERS4
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