Genetik - Introduction

In Mendel’s pea plant experiments, the F1 offspring from a cross between pure tall (TT) and pure dwarf (tt) plants were:

• 75% tall, 25% dwarf

• All dwarf

• 50% tall, 50% dwarf

• All tall

In incomplete dominance, crossing red flowers (RR) with white flowers (rr) produces:

• All red

• All white

• All pink

• 3:1 ratio

If both parents are heterozygous for albinism (Aa), the probability of a child being albino (aa) is:

• 25%

• 50%

• 75%

• 100%

The central dogma of molecular biology states that information flows from:

• Protein → RNA → DNA

• RNA → DNA → Protein

• DNA → RNA → Protein

• Protein → DNA → RNA

Which of the following is NOT involved in translation?

• ribosome

• mRNA

• tRNA

• DNA

A sequence of three nucleotides that codes for an amino acid is called a:

• Gene

• Codon

• Exon

• Intron

Down syndrome is caused by:

• A point mutation

• Trisomy 21

• Monosomy X

• Translocation

In humans, ABO blood group is an example of:

• Incomplete dominance

• Polygenic inheritance

• Codominance

• Epistasis

In eukaryotes, non-coding sequences removed during RNA processing are called:

• codon

• exon

• intron

• operon

Who is the person?

• Francis Crick

• Thomas Hunt Morgan

• James Watson

• Gregory Mendel