The region of DNA sequences before the start of a gene is often called the promoter. One type of promoter is called the TATA box. Many species' promoters are TATA boxes or a variation of the TATA box
Many species' promoters are TATA boxes or a
variation of the TATA box. DNA sequences that are similar in different organisms are called
____ sequences.
Fill in the blank with the appropriate word.
conserved
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A karyotype (a display of the chromosomes in a cell) is often used to look for genetic disorders. Karyotype results would not be useful to determine ________.
A. Down syndrome B. sex C. Turner syndrome D. eye color
Bones are connected to other bones by ________
Fill in the blank(s) with correct word
Medullary breathing centers directly sense and respond to
A) blood pH and CO2 concentration. B) blood O2 concentration. C) alveolar O2 concentration. D) blood pH and O2 concentration.
The most famous and well-studied mass extinction occurred at the end of the Cretaceous period (65 million years ago), at which time the dinosaurs and a variety of other terrestrial and aquatic organisms went extinct. Recent findings have supported the hypothesis that this extinction event was triggered when a large asteroid slammed into Earth. Which of the following could cause a global mass extinction following an asteroid strike? (Check all that apply.)A) The impact triggered global forest fires that obscured the sun.B) The asteroid killed animals it hit upon impact.C) The asteroid was very hot when it entered the atmosphere and heated up the planet.D) The asteroid created a massive dust cloud that obscured the sun.
What will be an ideal response?