When comparing prophase I of meiosis with prophase of mitosis, which of the following occurs only in meiosis?
A) The chromosomes condense.
B) Tetrads form.
C) The nuclear envelope disassembles.
D) A spindle forms.
E) Each chromosome is composed of two chromatids
Ans: B) Tetrads form
You might also like to view...
To understand past and predict future changes in populations, ecologists use three important factors. These are:
A. the population's birth rate. B. expected longevity of individuals in the population. C. the proportion of individuals in the population able to reproduce. D. the population's birth rate and the expected longevity of individuals in the population. E. the population's birth rate, the expected longevity of individuals in the population, and the proportion of individuals in the population able to reproduce.
An animal must be physiologically ready before it can exhibit a behavior pattern. This is illustrated by
all of the following, except:a. a 2-day-old human being not being able to walk. b. a bald eagle not being able to fly at birth. c. a sand wasp pupa not being able to lay an egg. d. a taxi driver not being able to locate an address. e. a sparrow not being able to sing immediately after hatching
Three species that arose as a result of adaptive radiation are organized on a cladogram. On this cladogram, two of the species would likely share several characters not present in the third.
a. true b. false
What is the main role of the pigment molecules within the antenna or light-harvesting complex?
A. Absorb photons and transfer light energy to the reaction center chlorophyll. B. Oxidize water and release oxygen to the reaction center chlorophyll. C. Synthesize NADPH. D. Increase H+ concentration in the stroma. E. Pass electrons to the electron transport chain and then to NADPH.