use otherscience topic you just posted on from me i will give the multiple choice answers to you hopefully you see this

Multiple choice

What is a genome? a. all the cells produced during meisos, b. all the plasmids from splicing DNA in one cell of an organism, d. all the karyotypes in a cell

How does a geneticist use pedigrees? a. to create genetic crosses b.to replicate identical strings of DNA, c.to prove that that sex-linked traits are caused by dominant alleles, d.to trace the inheritance of traits over generation sof families

Why does height in humans have such a wide variety of phenotypes? a. Height is controlled by at least four genes, b.The gene for height has only two alleles, c.Height is controlled by sex-linked genes, d.Height is controlled by recessive allele

What controls variations in skin color among humans? a. a person’s diet, b.at least three genes, c.multiple alleles of a single gene, d. two alleles of a single gene.

I will add more when i come back

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73. the Human Genome Project is an attempt to
A. make a DNA fingerprint of every person’s DNA
B. sequence all human DNA
C. identify alleles in human DNA that are recessive
D. cure human diseases.

74.Darwin began to formulate his concept of evolution by natural selection after
A. experimentation with animals.
B. agreeing with Lamarck about the driving force behind evolution
C. observations of many species and their geographical location
D. reading the writings of Wallace

76. Which statement about the members of a population that live long enough to reproduce is consistent with the theory of natural selection?
A. they will perpetuate unfavorable changes in the species
B. they tend to produce fewer offspring than others in the population
C. they are the ones that are the best adapted to survive in their environment
D. they transmit characterizes acquired by use and disuse to their offsprings

80. Darwin’s theory of evolution is based on the ideas of
A. use and disuse
B. heritable variation and natural selection
C. the transmission of acquired characteristics.
D. a tendency toward perfect, unchanging species

82. A factor that is necessary for the formation of a new species is
A. reproduction at different times
B. geographic barriers.
C. different making behaviors
D. Reproductive isolation

83. What situation might develop in a population having some plants whose flowers open a t midday and other plants whose flowers open late in the day?
A behavioral isolation
B. Temporal isolation
C. genetic drift
D. geographic isolation

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Which molecules in eukaryotic cells regulate gene expression?

A.transcription factors

B.recombinant DNA

C.plasmids

D.lactose

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a. a protein produced by a recombinant bacterium
b. any animal that contains recombinant DNA
c. any cell that contains recombinant DNA
d. an exact copy of a DNA, cell, or organism

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1. When a human embryo is developing, the embryo produces a special type of hemoglobin not found in infant, child, or adult blood. Which of the following best explains how an embryo can produce a different type of hemoglobin than an infant, child, or adult?

a. The embryo has different genes than the infant, child, or adult.
b. Humans have genes for the different types of hemoglobin, which are expressed at different times.
c. Development and differentiation result in the loss of certain genes.

2. Which molecules in eukaryotic cells regulate gene expression?

a. transcription factors
b. recombinant DNA
c. plasmids
d. lactose

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A. antibiotics that they produce
B. restriction nucleases that chop up foreign DNA
C. their R plasmids
D. reverse trnscriptase
E. episomes that incorporate viral DNA into the bacterial chromosome

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A. To carry the new gene to another organism
B. To cut the gene and connect the gene to the vector DNA
C. To serve as a host organism
D. To act as the vector
E. A and D only

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a) recombinant plasmids of bacteria
b) recombinant viral dna
c) individual wells
d) dna-rna hybrids
e) radioactive eukaryotic cells

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suppose the west nile virus is a class IV virus, that is, containing a single stranded (+) RNA what will be the first step in its infection?
a. it will be translated into some of the early proteins, including those necessary for RNA replication
b. it will be reverse transcribed into a double stranded RNA molecule
c. it will integrate into the host cell genome using a host cell primase
d. it will have its introns removed by a spliceosome

a particular operon produces enzymes that manufacture an importan amino acid one would hypothesize that
a. the amino acid inactivates the repressor
b. the enzymes produced are called inducible enzymes
c. the repressor binds to the operator in the absence of the amino acid
d. the amino acid acts as a corepressor
e. the amino acid "turns on" enzyme synthesis

all of the following are noncoding eukaryotic DNA except
a. introns
b. repetitive DNA
c. psuedogenes
d. promoters
e. rRNA genes

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Which of these processes does NOT require DNA replication?
A. Mitosis
B. Meiosis
C. Cell Division
D. Cell Growth

Why can the deletion of a single nitrogen base in DNA be harmful to an organism?
A. Deletion causes chromosomes to join backwards or to join the wrong chromosomes.
B. Deletion causes nearly every amino acid in the protein to change.
C. Deletion causes a gamete to have an extra chromosome.
D. Deletion causes chromosomes to join with the wrong chromosome.

Which of the following processes does NOT involve ribonucleic acid?
A. Replication
B. Translation
C. Transcription
D. Codon attachment to a ribosomes

Which processes results in an RNA copy of a DNA strand?
A. translation
B. transcription
C. replication
D. mitosis

Which does NOT describe restriction enzymes?
A. they are bacterial proteins.
B. they have the ability to cut double-stranded DNA.
C. they can carry DNA from one species into a host cell.
D. there are hundreds of restriction enzymes.

Which series correctly sequences interactions in nature from larger to smallest?
A. population, ecosystem, community
B. species, organism, community
C. ecosystem, community, population
D. community, population, ecosystem

Which terms are NOT related?
A. water cycle- precipitation
B. phosphorus cycle- evaporation
C. nitrogen cycle- nitrogen fixation
D. carbon cycle- photosynthesis

A manufacturing plant is located on the bank of a river. One day, toxic chemicals from the plant accidentally spilled into the river. Fish absorbed some of these chemicals into their bodies. Later, a hawk living near the river was found to have the same toxic chemicals in its system. Which statement best explains why?
A. the chemicals entered the air.
B. the chemicals entered the food chain.
C. the chemicals were contagious.
D. the chemicals commonly are found in the environment.

Based on what you’ve learned about the cycling of material through ecosystems, predict which material would most likely be added to a chemical fertilizer to increae soil productivity.
A. H2O
B. CO2
C. N2
D. NO3

Thank you so much

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