Biology 121- Chapter 8 Complete
Solutions
any chromosome other than a sex chromosome; have same length, shape, and
centromere location; hold information about the same traits - ANSWER-autosomes
member of a pair of chromosomes that differs between males and females;
differences determine sex - ANSWER-sex chromosomes
XX - ANSWER-female
XY - ANSWER-male
in butterflies, moths, birds, and certain fishes, males have 2 identical sex
chromosomes, and females don't - ANSWER-...
isolated an acidic substance from nuclei, which was mostly composed of nitrogen
and phosphorus creating deoxyribunucleic acid (DNA) - ANSWER-Johannes
Miescher
rat experiment; originally thought that proteins were the substance of heredity -
ANSWER-Avery and McCarty
virus that infect bacteria; discovered in 1950 - ANSWER-bacteriophage
bacteriophage injects DNA into the bacteria; their experiment confirmed that DNA,
not protein, carries hereditary information - ANSWER-Alfred Hershey and Martha
Chase
has 5-carbon sugar, 3 phosphate groups, and a nitrogen-containing base -
ANSWER-DNA nucleotide
A= adenine
G= guanine
T= thymine
C= cytosine
differ only in their base - ANSWER-4 nucleotides found in DNA
discovered in 1950 that amounts of thymine and adenine are identical as well as
cytosine and guanine; also discovered that the DNA of different species differs in its
proportions of adenine and guanine - ANSWER-Erwin Chargaff
discovery of the helical secondary structure that occurs in many proteins - ANSWER-
Herman Branson
Solutions
any chromosome other than a sex chromosome; have same length, shape, and
centromere location; hold information about the same traits - ANSWER-autosomes
member of a pair of chromosomes that differs between males and females;
differences determine sex - ANSWER-sex chromosomes
XX - ANSWER-female
XY - ANSWER-male
in butterflies, moths, birds, and certain fishes, males have 2 identical sex
chromosomes, and females don't - ANSWER-...
isolated an acidic substance from nuclei, which was mostly composed of nitrogen
and phosphorus creating deoxyribunucleic acid (DNA) - ANSWER-Johannes
Miescher
rat experiment; originally thought that proteins were the substance of heredity -
ANSWER-Avery and McCarty
virus that infect bacteria; discovered in 1950 - ANSWER-bacteriophage
bacteriophage injects DNA into the bacteria; their experiment confirmed that DNA,
not protein, carries hereditary information - ANSWER-Alfred Hershey and Martha
Chase
has 5-carbon sugar, 3 phosphate groups, and a nitrogen-containing base -
ANSWER-DNA nucleotide
A= adenine
G= guanine
T= thymine
C= cytosine
differ only in their base - ANSWER-4 nucleotides found in DNA
discovered in 1950 that amounts of thymine and adenine are identical as well as
cytosine and guanine; also discovered that the DNA of different species differs in its
proportions of adenine and guanine - ANSWER-Erwin Chargaff
discovery of the helical secondary structure that occurs in many proteins - ANSWER-
Herman Branson
