Understanding Genes and Gene Expression Quiz - Test Your Knowledge

despite being in different classes, Bradyrhizobium and Klebsiella pneumoniae have similar genes for fixing nitrogen.

the gene that creates the crest of the Bali Duck also causes physical defects which can kill it before it hatches.

the T4 rII experimental system enabled biologist Seymour Benzer to map a gene down to the level of one or two base pairs before the invention of DNA sequencing.

although the extinct Norfolk Island Boobook was last sighted in 1996, its genes live on in the hybrid descendants of the last living female bird.

a researcher at the University of Minnesota College of Biological Sciences discovered that the linear arrangement of genes on a chromosome corresponds to the development of body segments in fruit flies.

mutations of the ATN1 gene result in dentatorubral-pallidoluysian atrophy, a neurological disorder with diverse problems as dementia, ataxia, seizures and obstructive sleep apnea.

microchromosomes are very tiny gene-rich chromosomes which are a typical genetic component in birds, and some groups of non-mammalian animals.

spatiotemporal gene expression refers to the patterns in which genes are expressed in different tissues as an organism develops.

mutations in the FLNB gene cause boomerang dysplasia, a lethal congenital disorder in which the limbs' long bones malform into the shape of a boomerang.

Understanding Genes and Gene Expression

1 The process of producing a biologically functional molecule of either RNA or protein is called ________, and the resulting molecule itself is called a gene product.

2 In cells, a gene is a portion of ________ that contains both "coding" sequences that determine what the gene does, and "non-coding" sequences that determine when the gene is active (expressed).

3 Translation is carried out by ribosomes, large complexes of RNA and protein responsible for carrying out the chemical reactions to add new ________ to a growing polypeptide chain by the formation of peptide bonds.

4 A modern working definition of a gene is "a locatable region of ________ sequence, corresponding to a unit of inheritance, which is associated with regulatory regions, transcribed regions, and or other functional sequence regions ".

5 The manner in which DNA is stored on the histone, as well as chemical modifications of the histone itself, are regulatory mechanisms governing whether a particular region of DNA is accessible for ________.

6 Each tRNA has three unpaired bases known as the anticodon that are complementary to the codon it reads; the tRNA is also covalently attached to the ________ specified by the complementary codon.

7 Mutations propagated to the next ________ lead to variations within a species' population.

8 ________ promoter regions are much more complex and difficult to identify than prokaryotic promoters.

9 The existence of genes was first suggested by ________ (1822–1884), who, in the 1860s, studied inheritance in peaplants (Pisum sativum) and hypothesized a factor that conveys traits from parent to offspring.

10 In many single-celled eukaryotes such as ________, reproduction by budding is common, which results in asymmetrical portions of cytoplasm in the two daughter cells.

💡 Interesting Facts

Related Quizzes

Significant Events and Personalities of 1944

Significant Events and Figures of 1950

Significant Events and Personalities of 1956

Key Allies and Events of World War II

Understanding the Role of Ambassadors

Understanding Antibiotic Resistance and Its Implications

Exploring the Arecaceae Family: A Quiz on Palms

Exploring Astronomy: A Quiz on Celestial Knowledge