Chapter 7_Basics of Genetics

A genotype is:

• The observable characteristics of an individual

• The genetic information held by an individual

• A pattern that determines how a gene is inherited

• An alternate form of a gene

Which of the following bases complements (bonds) with guanine?

• Adenine

• Cytosine

• Thymine

• Uracil

Which of the following describes an individual with 1 set of chromosomes (n)?

• Haploid

• Diploid

• Triploid

• Tetraploid

A phenotype is:

• The observable characteristics of an individual

• The genetic information held by an individual

• A pattern that determines how a gene is inherited

• An alternate form of a gene

Which dominance pattern best describes the flower's petal colours?

• Complete dominance

• Incomplete dominance

• Codominance

• Homozygous dominant

An allele is:

• The observable characteristics of an individual

• The genetic information held by an individual

• A pattern that determines how a gene is inherited

• An alternate form of a gene

In which stage of meiosis does 'Crossing Over' occur?

• Prophase I

• Anaphase I

• Telophase I

• Metaphase I

At the end of meiosis II:

• 4 diploid daughter cells are produced

• 4 haploid daughter cells are produced

• 2 haploid daughter cells are produced

• 2 diploid daughter cells are produced

Crossing over can be described as:

• exchange of genetic material between non-sister chromatids

• when homologous chromosomes align themselves in the middle of the cell

• random orientation of homologous chromosomes

• exchange of genetic material between sister chromatids

'Perfect pitch' is an autosomal dominant trait (P).

2 individuals that are heterozygous (Pp) mate. The probability of the child inheriting 'perfect pitch' is:

• 25%

• 50%

• 75%

• 100%