CWRU BIOL 215 Exam 2 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Two sources of variability that arises during meiosis and fertilizations - CORRECT
ANSWER - 1. Crossing over
2. Independent Assortment
Crossing Over - CORRECT ANSWER - homologous chromosomes pair... each sister
chromatid consists of a single stranded DNA molecule
What is the result of the crossing over between homologous chromatids? - CORRECT
ANSWER - The exchange of segments
Where do the homologous chromosomes separate? - CORRECT ANSWER - First meiotic
division
What is produced after meiosis II - CORRECT ANSWER - two daughter chromosomes
have parental combinations of alleles: A-B and a-b. And the other two daughter chromosomes
are recombinants for the alleles: A-b and a-B
Independent assortment - CORRECT ANSWER - refers to chromosomes splitting
what do a pair of chromosomes consist of in independent assortment? - CORRECT
ANSWER - one maternal chromosome and one paternal chromosome
In metaphase I, what occurs? (independent assortment) - CORRECT ANSWER - one of
each homologous pair is randomly attached to the spindle of each pole
, The 23 chromosome pairs of humans allow... how many different combinations?... - CORRECT
ANSWER - 2^23 different combinations of maternal and paternal chromosomes
Who are the pioneers of genetics - CORRECT ANSWER - - mendel
- miescher
- levene
- sutton
- morgan
What did Mendel discover? - CORRECT ANSWER - heredity transmitted in discrete units
(1865)
What did Miescher discover? - CORRECT ANSWER - first identifies DNA in cells (1869)
What did Levene discover? - CORRECT ANSWER - DNA is composed of nucleotides
(proposed the tetranucleotide structure)
What did Sutton discover? - CORRECT ANSWER - chromosome theory of inheritance
(1902)
What did Morgan discover? - CORRECT ANSWER - chromosomes carry genes (1911)
Experiments that established DNA as the genetic material - CORRECT ANSWER --
Griffith
- Avery, MacLeod, McCarty
- Astbury
- Chargaff
- Hershey, Chase
- Franklin
ACTUAL Exam Questions and CORRECT
Answers
Two sources of variability that arises during meiosis and fertilizations - CORRECT
ANSWER - 1. Crossing over
2. Independent Assortment
Crossing Over - CORRECT ANSWER - homologous chromosomes pair... each sister
chromatid consists of a single stranded DNA molecule
What is the result of the crossing over between homologous chromatids? - CORRECT
ANSWER - The exchange of segments
Where do the homologous chromosomes separate? - CORRECT ANSWER - First meiotic
division
What is produced after meiosis II - CORRECT ANSWER - two daughter chromosomes
have parental combinations of alleles: A-B and a-b. And the other two daughter chromosomes
are recombinants for the alleles: A-b and a-B
Independent assortment - CORRECT ANSWER - refers to chromosomes splitting
what do a pair of chromosomes consist of in independent assortment? - CORRECT
ANSWER - one maternal chromosome and one paternal chromosome
In metaphase I, what occurs? (independent assortment) - CORRECT ANSWER - one of
each homologous pair is randomly attached to the spindle of each pole
, The 23 chromosome pairs of humans allow... how many different combinations?... - CORRECT
ANSWER - 2^23 different combinations of maternal and paternal chromosomes
Who are the pioneers of genetics - CORRECT ANSWER - - mendel
- miescher
- levene
- sutton
- morgan
What did Mendel discover? - CORRECT ANSWER - heredity transmitted in discrete units
(1865)
What did Miescher discover? - CORRECT ANSWER - first identifies DNA in cells (1869)
What did Levene discover? - CORRECT ANSWER - DNA is composed of nucleotides
(proposed the tetranucleotide structure)
What did Sutton discover? - CORRECT ANSWER - chromosome theory of inheritance
(1902)
What did Morgan discover? - CORRECT ANSWER - chromosomes carry genes (1911)
Experiments that established DNA as the genetic material - CORRECT ANSWER --
Griffith
- Avery, MacLeod, McCarty
- Astbury
- Chargaff
- Hershey, Chase
- Franklin
