What was the main goal of the Human Genome Project (HGP)? |
to map all the human genes and determine the nucleotide sequence of the entire human genome |
BLAST is a computational tool used by genome biologists to _____. |
compare a given DNA or protein sequence to all other DNA or protein sequences in a database |
The number of genes correlates with _____. |
the size of the genome in prokaryotes |
Which of the following statements about genome sizes is true? |
Most eukaryotes have larger genomes than most prokaryotes. |
What type of noncoding DNA comprises the largest portion of multicellular eukaryotic genomes? |
transposons |
How do retrotransposons differ from other transposons? |
Retrotransposons move via an RNA transcript, whereas other transposons do not. |
How has gene duplication played a critical role in evolution? |
It produces redundant copies of existing genes, which are then free to mutate and adopt new functions. |
By what mechanism might transposons contribute to gene duplication? |
Transposons may promote unequal crossing over during meiosis. |
What is the goal of comparative genomic studies? |
-to identify homologues in model organisms for genes involved in human disease. -to study how genomes evolve. -to study genetic variation within a species or a population. -to identify genes that are important for evolution of a particular species. |
What are Hox genes? |
Hox genes encode transcription factors with a DNA-binding domain called a homeo box, and regulate development of the vertebrate body plan. |
Bioinformatics includes all of the following except: |
using molecular biology to combine DNA from two different sources in a test tube. |
*One of the characteristics of retrotransposons is that: |
they code for an enzyme that synthesizes DNA using an RNA template. |
Homeotic genes: |
encode transcription factors that control the expression of genes responsible for the organism’s development. |
Two eukaryotic proteins have one domain in common but are otherwise very different. Which of the following processes is most likely to have contributed to this similarity? |
exon shuffling |
Select the correct statement(s) about genome size and density. Select all that apply. |
Eukaryotic genomes are larger than prokaryotic genomes. |
Why is the outdated term "junk DNA" a misnomer for noncoding regions of the human genome? |
The conservation of "junk DNA" sequences in diverse genomes suggests that they have important functions. |
How do transposons differ from retrotransposons? Select all that apply: |
-Transposons may or may not leave a copy behind at the original site, whereas retrotransposons always leave a copy behind at the original site. -Transposons move by means of a DNA intermediate, whereas retrotransposons move by means of an RNA intermediate. |
Which of the findings of the Human Genome Project were contrary to initial expectations? Select all that apply. |
-Ninety-three percent of multi-exon human genes have alternatively spliced forms. -The human genome contains fewer than 21,000 genes. |
Identify the correct statement(s) about transposable elements. Select all that apply. |
Transposable elements and related sequences make up 44% of the human genome. |
Biology 1407 Ch 21
Share This
Unfinished tasks keep piling up?
Let us complete them for you. Quickly and professionally.
Check Price