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BSC 170 Exam 1 with verified solutions rated A+
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BSC 170 Exam 1 with verified solutions rated A+
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BSC 170 Exam 1Basic type of experiment that Mendel used - correct answer ✔✔Peas
- True breeding strains
-controlled mattings
-grows to maturity in one season
- observable with 2 distinct forms
-*recognized for transmission of hereditary traits*
Dominance/Recessiveness - correct answer ✔✔In a pair of unit factors, one unit is dominant, the other
recessive
Segregation - correct answer ✔✔Paired unit factors segregate (separate) independently during gamete
formation
Genotype - correct answer ✔✔-*Genetic Makeup of individual*
- Alleles written in pairs (DD, Dd, or dd)
-Organism inherits two alleles
-One from each parent
Phenotype - correct answer ✔✔Physical expression of a trait - how it looks
Monohybrid - correct answer ✔✔Reveals How One Trait Is Transmitted from
Generation to Generation
-crosses looking at one single trait across two generations
True-breeding
F1 - correct answer ✔✔offspring
, F2 - correct answer ✔✔Offspring of F1 generation crossed (self-fertilizing: "Selfing")
test cross - correct answer ✔✔One Character
-Determines if individual displaying dominant phenotype is homozygous or heterozygous for that trait
-Cross between dominant phenotype and homozygous recessive
Homozygous - correct answer ✔✔Both alleles are the same (DD, dd)
Heterozygous - correct answer ✔✔- Alleles are different (Dd)
gene - correct answer ✔✔unit of inheritance
allele - correct answer ✔✔alternative form of a single gene
test cross results - correct answer ✔✔DD x dd = Dd (all tall)
Dd x dd = 1/2 Dd tall 1/2 dd dwarf
dihybrid cross - correct answer ✔✔Two pairs of contrasting traits
-Generates unique F2 generation
- 4th different types of peas
chromosome structure - correct answer ✔✔- The ends of chromosomes are called telomeres: Play a role
in aging
-Chromosome has a specialized area called a centromere where the chromosome looks cinched
-Centromere can be located at different positions
oUsed along with size to identify homologous chromosomes
centromere - correct answer ✔✔o Centromere can be located at different positions
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