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Biology Final Exam Practice Test With Complete Solutions And Correct Answers Latest Version
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Biology Final Exam Practice Test With Complete Solutions And Correct Answers Latest Version
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Biology Final Exam Practice Test WithComplete Solutions And Correct Answers
Latest Version
What is mRna and what is used for? Answer: Copies the DNA code so that it can leave the nucleus;
takes the code to the rRNA site
Adenine, Thymine, Cytosine, & Guanine are what? Answer: The 4 nitrogen bases in DNA
What are the 4 nitrogen base pairs for RNA ? Answer: A-U & C-G
rRna, forms the complex at the ribosome the serves as the site where proteins are made. True or False
Answer: True
An allele is a variation of a gene? True or False Answer: True
Bb = genotype of heterozygous individual & the phenotype would be black hair results from results from
what dominate hair type and recessive? Answer: Black hair is dominant & yellow is recessive
Describe & provide and example of a polygenic inheritance? Answer: Polygenic inheritance is
controlled by more than 1 gene. Offspring will be an intermediate between the parents, most likely
average for the characteristic. Ex: human height, weight, & eye color.
What are the difference between sex chromosomes & autosomes? Answer: Sex chromosomes are
Pair #23 in humans. Pairs #1-22 are the autosomal chromosomes. Most traits are carried by the
autosomal and the male/female determination by the sex chromosome.
2024
, Describe the theory of Evolution Answer: Evolution is the change in the gene frequencies of a
population over time.
New alleles that enter a population through genetic mutation arise what? Answer: New adaptations
Describe convergent evolution Answer: Convergent evolution: The process by which unrelated
species come to resemble one another due to adaptations to similar environments
Natural Selection is the process by which organisms who are better adapted for an environment are
more likely to survive & reproduce. True or False Answer: True
Describe the likeness between species on the mainland of South America & the Galapagos Island? Who
explained these differences? Answer: Charles Darwin hypothesized that the species on the
Galapagos Islands were descendants of species that colonized the islands from the mainland. The
current species had descended over time & adapted to the island environment, so they showed
differences but still resembled the ancestors.
Divergent Evolution is the process by which one species descent from a common ancestor with changes
over time. True or False Answer: False - several descents
Phosphate, sugar, & nitrogenous base are the 3 parts of what, describe sugar's role in DNA and RNA,
what parts are the backbone? Answer: 3 parts of Nucleotide
DNA - sugar is deoxyribose
RNA- sugar is ribose
Backbone - is phosphate molecule & sugar
Describe tRNA and what is it used for? Answer: tRNA brings the free amino acids to the rRNA site so
that a protein chain can be made.
2024
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