3.1- What is the difference between the alleles of a gene?

Their position on the chromosome

How are new alleles formed?

random orientation of homologous chromosomes

What is true of the Human Genome Project?

The entire human genome has been sequenced

About 60% of the human genome has been sequenced

The human genome is classified and is not available to the public

Different humans groups were found to have different genes

Which is NOT a difference between prokaryotic and eukaryotic DNA?

Eukaryotic=double helix, Prokaryotic=single strand

Eukaryotic=linear, Prokaryotic=circular

Eukaryotic=histones, Prokaryotic=usually naked

Eukaryotic=Multiple chromosomes, Prokaryotic=single chromosome

Polymerase chain reaction (PCR) does NOT require:

dideoxynucleoside triphosphates

Which is not a method used for cloning:

asexual reproduction in animals

In the cloning technique that produced Dolly, what was done to the donor ovum?

it was injected with a single selected sperm

What is NOT true of Bt crops?

they were developed by inserting the Bt gene into a bacterial plasmid

they are GMOs (genetically modified organisms)

they produce Bt in all parts of the plant

there is some evidence of harm to non-target species like monarch butterflies

IB Bio HL Topic 3 Review

Biology

12th Grade - University

NGSS covered

Used 73+ times

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is the cause of sickle-cell anemia?

Tryptophan is replaced by leucine

Leucine is replaced by valine

Glutamic acid is replaced by valine

Lysine is replaced by glutamic acid

Which of the following statements about homologous chromosomes is correct?

Each gene is at the same locus on both chromosomes

They are two identical copies of a parent chromosome which are attached to one another at the centromere

They always produce identical phenotypes

They are chromosomes that have identical genes and alleles

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens in crossing over?

Exchange of genes during metaphase of mitosis

Random distribution of chromosomes during meiosis

Exchange of genetic material between homologous chromosomes

Homologous chromosomes fail to separate during meiosis

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What can be concluded from the karyotype provided below?

There was non-disjunction during meiosis in the mother.

There was non-disjunction during meiosis in the father.

The fetus is male.

The fetus is female.

A cell in the testis of a male chimpanzee contains 2n=48 chromosomes. It then undergoes meiosis. How many molecules of DNA will be present in the nucleus of the sperm cells just after meiosis?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the haploid number of a species is 14, how many chromatids will there be in metaphase I in a dividing diploid cell?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many autosomes are there in a human sperm?

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IB Bio HL Topic 3 Review

Which of the following is the cause of sickle-cell anemia?

Which of the following statements about homologous chromosomes is correct?

What happens in crossing over?

What can be concluded from the karyotype provided below?

A cell in the testis of a male chimpanzee contains 2n=48 chromosomes. It then undergoes meiosis. How many molecules of DNA will be present in the nucleus of the sperm cells just after meiosis?

If the haploid number of a species is 14, how many chromatids will there be in metaphase I in a dividing diploid cell?

How many autosomes are there in a human sperm?

Which phase of cell division is photographed in order to make a karyotype?

What does the karyotype below correspond to?

If the amount of DNA in a haploid gamete is represented by X, what is the net quantity of DNA in a cell from the same organism at the start of meiosis?

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