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Category > Biology Posted 11 Aug 2020 My Price 35.00

SCI 115 Unit 6 Milestone Human Biology Sophia Course

SCI 115 Unit 6 Milestone Human Biology Sophia Course

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Bert has blonde hair (b). Molly has brown hair (B), but her genotype is Bb, meaning she carries a recessive blonde allele.

What is the likelihood of Bert and Molly's second child having brown hair?·

50%

100%

25%

75%

Which of these is a disorder in which mucus builds up in the lungs?

Huntington's disease

Down syndrome

Phenylketonuria

Cystic fibrosis

CONCEPT

Autosomal Recessive Traits and Disorders

What is an observable characteristic? (e.g. a person's height or skin color)

Locus

Genotype

Allele

Phenotype

CONCEPT

Heredity

What best describes reproductive cloning?

When a cloned embryo can be used to grow specific tissues

When a cloned embryo can be developed into a fetus in a test tube

When a cloned embryo can be used as a source of gametes

When a cloned embryo can be transferred into a woman’s uterus

CONCEPT

DNA Technology and Research

How many total chromosomes (autosomes + sex chromosomes) are in a human cell?

CONCEPT

Structure of DNA and Chromosomes

Which of these is responsible for the occurrence of disjunction?

Duplication of genetic material

Fusion of homologous chromosomes

Separation of homologous chromosomes

Exchange of genetic material

CONCEPT

Meiosis and Genetic Variability

Using specially designed bacteria to clean up environmentally hazardous radioactive waste would be an example of __________.

gene therapy

sequencing

a polymerase chain reaction

bioremediation

CONCEPT

DNA Technology and Research

A fiber that consists of microtubules and connects chromosomes to the poles of the cells during cell division is called the __________.

spindle

centrosome

centromere

centriole

CONCEPT

Mitosis

A mother has red-green colorblindness, her husband does not.

If the couple has a son, what are the chances that he is colorblind?

100%

50%

25%

CONCEPT

X-Linked Traits

The final phase of translation, called termination, is signaled by three nucleotides, called a __________, that mark the end of a polypeptide chain.

exon

plasmid

intron

stop codon

CONCEPT

Protein Synthesis, Part 2: Translation

Which phase of mitosis follows prophase?

Metaphase

Interphase

Telophase

Anaphase

CONCEPT

Mitosis

Sometimes a trait can be influenced by multiple genes.

What would such a trait be called?

Pleiotropy

Multifactorial trait

Polygenic trait

Penetrance

CONCEPT

Polygenic Traits and Pleiotropy

Why is DNA replication considered semi-conservative?

Half of the DNA molecule produced is from an RNA precursor.

Two strands of the original DNA molecule are separated.

The new double helix has one strand from the original DNA and one new strand.

The new double helix has two strands of new DNA.

CONCEPT

DNA Replication

Blonde hair (represented as b) is a recessive trait.

If Julie has blonde hair, which of the following could have been her parents' genotypes?

BB, bb

BB, BB

Bb, bb

Bb, BB

CONCEPT

Punnett Squares

Cri-du-chat is an example of what kind of genetic mutation?

Environmental

Translocation

Deletion

Duplication

CONCEPT

Which of these is a disorder in which mucus builds up in the lungs?

Cystic fibrosis

Phenylketonuria

Down syndrome

Huntington's disease

CONCEPT

Autosomal Recessive Traits and Disorders

A fiber that consists of microtubules and connects chromosomes to the poles of the cells during cell division is called the __________.

spindle

centrosome

centromere

centriole

CONCEPT

Mitosis

How many total chromosomes (autosomes + sex chromosomes) are in a human cell?

CONCEPT

Structure of DNA and Chromosomes

Using specially designed bacteria to clean up environmentally hazardous radioactive waste would be an example of __________.

sequencing

a polymerase chain reaction

gene therapy

bioremediation

CONCEPT

DNA Technology and Research

The final phase of translation, called termination, is signaled by three nucleotides, called a __________, that mark the end of a polypeptide chain.

exon

stop codon

plasmid

intron

CONCEPT

Protein Synthesis, Part 2: Translation

Which of these is responsible for the occurrence of disjunction?

Fusion of homologous chromosomes

Separation of homologous chromosomes

Duplication of genetic material

Exchange of genetic material

CONCEPT

Meiosis and Genetic Variability

Cri-du-chat is an example of what kind of genetic mutation?

Duplication

Environmental

Translocation

Deletion

CONCEPT

Chromosome Structure Changes

Which phase of mitosis follows prophase?

Interphase

Telophase

Metaphase

Anaphase

CONCEPT

Mitosis

A father is colorblind.

What are the odds that he passes this gene to his son?

25%

100%

50%

CONCEPT

X-Linked Traits

Rudolph the Reindeer has a red nose (n), which is a recessive trait. Betsy the Reindeer has a black nose (N), which is a dominant trait, and she does not carry the recessive allele. Assume the rules of human genetics also apply to reindeer.

If Rudolph and Betsy have a calf, what will its genotype be?

Either NN or Nn

CONCEPT

Punnett Squares

To date, which of these has been used largely in creating clones?

RNA sequencing

Protein mapping

Metabolic profiling

Recombinant DNA technology

CONCEPT

DNA Technology and Research

Mark and Michelle both have dark hair, which is a dominant trait. But their first child is blonde.

Which is the most likely explanation?

Both parents have a recessive blonde allele that got passed on to their child.

Another gene caused the alleles for brown hair to deactivate.

One of the two has a blonde allele that is dominant in the child.

It's not possible--Mark can't be the real father.

CONCEPT

Punnett Squares

What is an observable characteristic? (e.g. a person's height or skin color)

Locus

Genotype

Phenotype

Allele

CONCEPT

Heredity

Why is DNA replication considered semi-conservative?

Half of the DNA molecule produced is from an RNA precursor.

The new double helix has one strand from the original DNA and one new strand.

Two strands of the original DNA molecule are separated.

The new double helix has two strands of new DNA.

CONCEPT

DNA Replication

How genes are expressed can be influenced by factors outside the body, like diet.

What are the resulting phenotypes called?

Pleiotropy

Multifactorial trait

Polygenic trait

Penetrance

CONCEPT

Polygenic Traits and Pleiotropy

Sometimes a trait can be influenced by multiple genes.

What would such a trait be called?

Multifactorial trait

Penetrance

Pleiotropy

Polygenic trait

CONCEPT

Polygenic Traits and Pleiotropy

Edgar and Alice both have blonde hair, which is a recessive trait. But their first child has brown hair.

What is the most likely explanation?

One parent has a dominant allele for blonde hair and a recessive allele for brown hair.

Another gene caused the alleles for blonde hair to deactivate.

Blonde hair is not actually a recessive trait.

It's not actually possible for two parents with recessive phenotypes to have a child with a dominant phenotype.

CONCEPT

Punnett Squares

A fiber that consists of microtubules and connects chromosomes to the poles of the cells during cell division is called the __________.

centrosome

spindle

centromere

centriole

CONCEPT

Mitosis

Why is DNA replication considered semi-conservative?

The new double helix has one strand from the original DNA and one new strand.

Two strands of the original DNA molecule are separated.

Half of the DNA molecule produced is from an RNA precursor.

The new double helix has two strands of new DNA.

CONCEPT

DNA Replication

Cri-du-chat is an example of what kind of genetic mutation?

Deletion

Translocation

Environmental

Duplication

CONCEPT

Chromosome Structure Changes

Which of the following statements is true regarding plasmids?

All of the answer choices are correct.

Plasmids may be transferred between different species of bacteria.

Plasmids are circular molecules of DNA.

Plasmids are sites for inserting genes for amplification.

CONCEPT

DNA Technology and Research

Mark and Michelle both have dark hair, which is a dominant trait. But their first child is blonde.

Which is the most likely explanation?

Both parents have a recessive blonde allele that got passed on to their child.

Another gene caused the alleles for brown hair to deactivate.

It's not possible--Mark can't be the real father.

One of the two has a blonde allele that is dominant in the child.

CONCEPT

Punnett Squares

Which of the following is true for homologous chromosomes?

We receive both from one parent.

They contain different sets of genes, and are different lengths and shapes.

We receive one from each parent.

They contain different sets of genes, and are different lengths and shapes.

We receive one from each parent.

They contain the same set of genes, and are the same length and shape.

We receive two from each parent.

They contain the same set of genes, and are the same length and shape.

CONCEPT

Structure of DNA and Chromosomes

Which of the following is the result of mitosis?

Four haploid cells that are identical to the parent cell

Two diploid daughter cells that are identical to the parent cell

Two haploid cells that are identical to the parent cell

Four diploid cells that are identical to the parent cell

CONCEPT

Mitosis

Which of these is a disorder in which mucus builds up in the lungs?

Cystic fibrosis

Huntington's disease

Phenylketonuria

Down syndrome

CONCEPT

Autosomal Recessive Traits and Disorders

A mother has red-green colorblindness, her husband does not.

If the couple has a son, what are the chances that he is colorblind?

50%

100%

25%

CONCEPT

X-Linked Traits

To date, which of these has been used largely in creating clones?

Protein mapping

RNA sequencing

Metabolic profiling

Recombinant DNA technology

CONCEPT

DNA Technology and Research

What is the gene that goes with a trait called?

Recessive allele

Genotype

Phenotype

Heredity

CONCEPT

Heredity

Molecules called __________ have the ability to determine the speed at which transcription takes place.

start codons

regulatory proteins

exons

transfer RNA

CONCEPT

Protein Synthesis, Part 2: Translation

Spermatogenesis results in the formation of __________.

two diploid sperm cells

two haploid sperm cells

four diploid sperm cells

four haploid sperm cells

CONCEPT

Meiosis and Genetic Variability

Which of the following is true of crossing over?

It increases genetic variability.

It involves the exchange of chromosome segments between homologous chromosomes.

It occurs in meiosis I.

All of the choices are correct.

CONCEPT

Meiosis and Genetic Variability

Which of these is true for mitosis?

Each daughter cell has 46 chromosomes.

It results in four daughter cells.

It has five phases.

Resulting daughter cells are haploid in nature.

CONCEPT

Mitosis

Blonde hair (represented as b) is a recessive trait.

If Julie has blonde hair, which of the following could have been her parents' genotypes?

BB, bb

BB, BB

Bb, bb

Bb, BB

CONCEPT

Punnett Squares

Which of these is a disorder in which mucus builds up in the lungs?

Huntington's disease

Down syndrome

Cystic fibrosis

Phenylketonuria

CONCEPT

Autosomal Recessive Traits and Disorders

Which of the following is true for homologous chromosomes?

We receive one from each parent.

They contain different sets of genes, and are different lengths and shapes.

We receive one from each parent.

They contain the same set of genes, and are the same length and shape.

We receive two from each parent.

They contain the same set of genes, and are the same length and shape.

We receive both from one parent.

They contain different sets of genes, and are different lengths and shapes.

CONCEPT

Structure of DNA and Chromosomes

Which of these chromosome abnormalities results in multiple sets of the same sequence of nucleotides?

None of these

Duplication

Deletion

Translocation

CONCEPT

Chromosome Structure Changes

What best describes reproductive cloning?

When a cloned embryo can be used to grow specific tissues

When a cloned embryo can be developed into a fetus in a test tube

When a cloned embryo can be transferred into a woman’s uterus

When a cloned embryo can be used as a source of gametes

CONCEPT

DNA Technology and Research

A father has red-green colorblindness, his wife does not, nor is she a carrier.

What are the odds that their daughter is a carrier for red-green colorblindness?

100%

25%

50%

CONCEPT

X-Linked Traits

Which of the following statements is true about recombinant DNA?

It is used in genetic engineering.

All of the answer choices are correct.

It contains DNA from more than one species.

It utilizes bacterial plasmids.

CONCEPT

DNA Technology and Research

What is variation, in the extent to which a gene is expressed, called?

Pleiotropy

Polygenic trait

Penetrance

Multifactorial trait

CONCEPT

Polygenic Traits and Pleiotropy

Which of the following is the result of mitosis?

Four diploid cells that are identical to the parent cell

Two haploid cells that are identical to the parent cell

Four haploid cells that are identical to the parent cell

Two diploid daughter cells that are identical to the parent cell

CONCEPT

Mitosis

Which of the following does DNA replication produce?

One molecule with extra DNA, causing the nucleus to divide

New RNA only

Two molecules, each of which is half new and half old DNA

New DNA only

CONCEPT

DNA Replication

Molecules called __________ have the ability to determine the speed at which transcription takes place.

start codons

transfer RNA

regulatory proteins

exons

CONCEPT

Protein Synthesis, Part 2: Translation

Edgar and Alice both have blonde hair, which is a recessive trait. But their first child has brown hair.

What is the most likely explanation?

One parent has a dominant allele for blonde hair and a recessive allele for brown hair.

Another gene caused the alleles for blonde hair to deactivate.

Blonde hair is not actually a recessive trait.

It's not actually possible for two parents with recessive phenotypes to have a child with a dominant phenotype.

CONCEPT

Punnett Squares

What is an observable characteristic? (e.g. a person's height or skin color)

Genotype

Phenotype

Allele

Locus

CONCEPT

Heredity

Which of the following is a gene abnormality in which two nonhomologous parts rearrange and fuse together?

Translocation

Duplication

None of these

Deletion

What is an allele that isn't expressed called?

Recessive allele

Phenotype

Genotype

Dominant allele

What is the pinched region called where two sister chromatids are joined together?

Centromere

Chromosome

Centriole

Centrosome

What is a genetic mutation?

Change in DNA sequence

Joining of DNA molecules

Replication of DNA

Transcription of DNA

Which of the following statements is FALSE?

RNA has uracil as one of its nitrogen bases while DNA does not.

RNA is single-stranded while DNA is double-stranded.

RNA has ribose sugar in its nucleotide while DNA has deoxyribose sugar.

There are three types of DNA: mDNA, tDNA and rDNA.

What do all nucleotides have?

A five-carbon sugar, a nitrogen group and a phosphorous base

A five-carbon sugar, an amino acid and a peptide bond

A five-carbon sugar, a phosphate group and a nitrogenous base

Six-carbon monosaccharides bonded together in long branching chains

Answers

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Status NEW Posted 11 Aug 2020 07:08 PM My Price 35.00

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file 1597181614-SCI 115 Unit 6 Milestone Human Biology Sophia Course.docx preview (2091 words )

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