macroevolution
the true nature of natural selection
what are traits that are better suited to one particular environment become more common in a population over time.
what is protein
meiosis occurs in which cell type?
gametes
what are the four types of macromolecules?
carbohydrates,lipids,proteins,nucleic acids
a negatively charged beam will be composed primarily of ____
neutrons
when humans influence natural selection
what is artificial selection
true or false: DNA replication occurs during G2
False
how many daughter cells are produced during meiosis
d
what macromolecule provides short-term energy storage
carbohydrates
what makes a polar covalent bond different from a nonpolar covalent bond
in a polar covalent bond electrons are shared unevenly while in a non polar covalent bond they are shared equally
the type of selection that is responsible for most modern dog breeds
what is artificial selection
what is equal to cytosine in DNA
Guanine
if an organism has 20 chromosomes in each diploid cell how many chromosomes will each gamete have?
20
what is the building block of nucleic acids?
nucleotides
which type of bond does not dissolve in water?
non-polar covalent
when animals choose mates based on looks
what is sexual selection?
True or false: DNA replication must occur before cellular respiration starts.
False
what is thymine replaced with in RNA?
what is uracil
are lipids hydrophobic or hydrophilic
hydrophobic
what substance is perfectly neutral?
water
the reason most primates share similar hand and bone structures
what is a common ancestor
why is DNA considered antiparallel
the 5' to 3' direction of one strand runs opposite to the 5' to 3' direction of the other strand
how many pairs of homologous chromosomes should be in each human body cell
23
what is the building block of carbohydrates?
monosaccarides
what are the 3 types of subatomic particles found in atoms?
protons, neutrons, electrons