BIOL 215 CWRU ACTUAL TEST PAPER 2026 COMPLETE QUESTIONS AND SOLUTIONS

BIOL 215 CWRU ACTUAL TEST PAPER 2026
COMPLETE QUESTIONS AND SOLUTIONS


◉Crossing Over. 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?. Answer: The exchange of segments


◉Where do the homologous chromosomes separate?. Answer: First
meiotic division


◉What is produced after meiosis II. 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. Answer: refers to chromosomes splitting


◉what do a pair of chromosomes consist of in independent
assortment?. Answer: one maternal chromosome and one paternal
chromosome

, ◉In metaphase I, what occurs? (independent assortment). 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?.... Answer: 2^23 different combinations of maternal
and paternal chromosomes


◉Who are the pioneers of genetics. Answer: - mendel
- miescher
- levene
- sutton
- morgan


◉What did Mendel discover?. Answer: heredity transmitted in
discrete units (1865)


◉What did Miescher discover?. Answer: first identifies DNA in cells
(1869)


◉What did Levene discover?. Answer: DNA is composed of
nucleotides (proposed the tetranucleotide structure)