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There are 9 questions tagged under Human Genetics.

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1 Go

Q:

Some individuals with blood group A may inherit the genes for blond hair, while other individuals with blood group A may inherit the genes for brown hair. This can be explained by the principle of

A

dominance

B

multiple alleles

C

independent assortment

D

incomplete dominance

Tags: Mendelian Concepts | Human Genetics |

2 Go

Q:

How many of the following contribute to genetic variability?

1. Formation of chiasmata between homologous chromosomes
2. Co-dominance between two alleles
3. Independent assortment of chromosomes during Meiosis I
4. Backcrossing between pure dominant or pure recessive phenotypes
5. Mendel's Third Law of Segregation

A

Two

B

Three

C

All five

D

None

Tags: Human Genetics | Evolution |

3 Go

Q:

Histone methylation that weakens the association of histones with DNA results in:

A

an increase in transcription.

B

a decrease in RNA stability.

C

a decrease in protein concentration.

D

an increase in chromatin density.

Tags: Control of Gene Expression in Eukaryotes | Human Genetics | Genetic Code, Transcription, Translation |

4 Go

Q:

A disease caused by a mitochondrial mutation would have what pattern of inheritance?

A

maternal

B

autosomal

C

X-linked

D

Y-linked

Tags: Human Genetics |

5 Go

Q:

Single Nucleotide Polymorphisms (SNPs) should be most abundant in:

A

highly-conserved domains of metabolic proteins

B

non-coding regions of DNA

C

interior protein domains of cytosolic proteins

D

exons of genes

Tags: Human Genetics |

6 Go

Q:

A child is born with blood type A positive. The mother's blood type is A negative. Which of the following men could NOT be the father of the child?

A

A positive

B

O negative

C

AB positive

D

B positive

Tags: Human Genetics | Mendelian Concepts |

7 Go

Q:

After many mitotic divisions of a somatic cell in an organism, what is the most significant difference between the original cell and the descendant cell?

A

There are fewer genes.

B

The telomeres have shortened.

C

The nucleus is smaller.

D

The chromatin is denser.

Tags: Human Genetics | Miscellaneous Biology |

8 Go

Q:

An individual with the blood type A negative can accept blood from which of the following donors?

I. A
II. AB
III. B
IV. O

A

I only

B

IV only

C

I, II, and IV only

D

I and IV only

Tags: Human Genetics |

9 Go

Q:

A nucleosome is defined as:

A

a set of eight histones.

B

the condensed form of chromatin.

C

a single protein unit which binds to DNA strands.

D

a set of several regions on a chromosome.

Tags: Human Genetics | Eukaryotic Cells |

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