Genetics and Inheritance Quiz

Blood Type Inheritance

• A man with AB blood and a woman with O blood will have offspring with blood types A or B.

Barr Bodies

• Mammalian cells with a XXXXY chromosomal constitution will have 3 Barr bodies.

Mitochondrial Disease Risk

• If one parent has a mitochondrial disease and the other does not, all children will have a risk of inheriting the disease.

Drosophila Gene Location

• The purple (p) and curved (c) genes in Drosophila are on the same chromosome.

Recombinant Chromosomes

• Recombinant chromosomes in the F1 generation are shown in the diagram.

Meiosis Purpose

• Meiosis in animals produces gametes.

Meiosis and Alleles

• A homologous pair of chromosomes in a bivalent will possess four alleles for each locus in meiosis.

Plant Life Cycle End

• Fertilization ends the multicellular haploid phase of a plant's life cycle.

DNA Strand End Identification

• The 3' end of a DNA strand is identified by a free -OH group on the sugar.

Guanine-Adenine Ratio

• If a species has 22% guanine in its genome, it is expected to have 28% adenine.

DNA Ligase Deficiency

• A deficiency in DNA ligase will result in DNA fragments not linking together correctly.

Telomere Function

• Telomeres are repeating DNA sequences at the end of chromosomes that protect and identify them.

Promoter Region Function

• The promoter region is a DNA region where RNA polymerase binds and initiates transcription.

Spliceosome Composition

• Spliceosomes are composed of snRNPs.

Membrane Component Exclusion

• Nucleic acids are not a component of biological membranes.

Membrane Fluidity Factors

• Saturated fatty acid tails, high temperatures, and shorter fatty acid tails increase membrane fluidity, while cholesterol and double bonds in fatty acids decrease it.

Membrane Transport Inhibition

• Iron (Fe+) cannot directly pass through the membrane due to its charge.

Isotonic Solution Red Blood Cell Response

• Red blood cells placed in a 4% NaCl solution (hypertonic) will shrink (crenate).

tRNA Function

• Anticodon is the part of tRNA that interacts with the codon.

Translation Elongation

• Elongation of translation involves moving a peptidyl-tRNA from the A site to the P site.

Membrane Transport Protein Types

• Antiporters transport two or more molecules in opposite directions across the membrane.

Test your knowledge on key concepts of genetics, including blood type inheritance, Barr bodies, and mitochondrial disease risks. This quiz covers essential principles of meiosis and gene location using Drosophila as a model organism.