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MDCAT
Biology
2005

Biology · Chromosomes and DNA

Work through this past-paper style MCQ, then read the full explanation. Practice more biology questions on mMCQ with adaptive practice and topic analytics.

Question

The alternative form of given gene are called:

Options
  • A

    Dominant

  • B

    Recessive

  • C

    Phenotype

  • D

    Alleles

Explanation

Fact. 

"Allele" is the word that we use to describe the alternative form or versions of a gene. 

Whereas Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

And The observable characteristics in an individual resulting from the expression of genes are called phenotype.

This option is incorrect.

Fact.

"Allele" is the word that we use to describe the alternative form or versions of a gene.

Whereas Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

And The observable characteristics in an individual resulting from the expression of genes are called the phenotype.

This option is incorrect. 

Fact.

"Allele" is the word that we use to describe the alternative form or versions of a gene.

Whereas Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

And The observable characteristics in an individual resulting from the expression of genes are called the phenotype.

This option is incorrect. 

Fact.

"Allele" is the word that we use to describe the alternative form or versions of a gene.

Whereas Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

And The observable characteristics in an individual resulting from the expression of genes are called the phenotype.

Fact. 

"Allele" is the word that we use to describe the alternative form or versions of a gene. 

Whereas Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

And The observable characteristics in an individual resulting from the expression of genes are called the phenotype.

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Tagged under Biology · Chromosomes and DNA · 2005