Is a mutation more likely to be lethal if it impacts early or late stages in development? What will be an ideal response?
The earlier the expression of a mutation in development, the more likely is is to be lethal. Events in
early stages of development have impacts on large portions of anatomy and stages of development,
thus a small mutation could have a very major impact. On the other hand, later-acting mutations are
more apt to impact a small aspect of the fetus and therefore are less likely to be lethal.
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____ in angiosperms occurs when a sperm cell "fertilizes" a diploid (2n) cell within the future seed (eventually forming a triploid (3n) endosperm), and a second sperm fertilizes a haploid (1n) egg
Fill in the blank with the appropriate word.
During a dive, a marine mammal experiences an increase in the partial pressure of dissolved gases of about 1
atmosphere for every ____ meter(s) in depth
a. 1 b. 5 c. 10 d. 15 e. 20
Which solution has the potential to diffuse the fastest?
a. A solution with large molecules as opposed to smaller ones. b. A solution with a higher concentration of molecules as opposed to one with a lower concentration. c. A solution that is under low pressure as opposed to one under high pressure. d. A solution that is at a low temperature as opposed to one at a higher temperature. e. A solution containing a hydrophilic solute as opposed to a salt.
Demography is the study of how births and deaths change population sizes over time.
Answer the following statement true (T) or false (F)