BSC 170 Exam 1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Basic type of experiment that mendel used - CORRECT ANSWER - Peas
- True breeding strains
-controlled matings
-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
Exam Questions and CORRECT Answers
Basic type of experiment that mendel used - CORRECT ANSWER - Peas
- True breeding strains
-controlled matings
-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
