Crossing over is one of the most important
events in meiosis because
a. it produces new combinations of alleles on
chromosomes.
b. homologous chromosomes must be
separated into different daughter cells.
c. the number of chromosomes allotted to
each daughter cell must be halved.
d. homologous chromatids must be separated
into different daughter cells.
e. all of these reasons are true
A
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Based on the phylogeny shown, choose the true statements about evolutionary relationships (Select all that apply).
_____ A snake is more closely related to a newt than to a mouse.
_____ A newt is equally related to a snake and a chimp.
_____ A mouse is more closely related to a chimp than to a snake.
_____ A salamander is more closely related to a mouse than to a chimp.
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about cladistics?
Consider Possibilities
· Consider the different answer options. Which can you rule out?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Do any difference(s) detected in DNA sequence seem to correlate with a difference in amino acid sequence?
a. yes b. no
An intron is a section of an RNA that gets spliced out
Indicate whether the statement is true or false
Given the distribution of the 30 or so animal phyla across the Earth's various ecosystems, what would be the most likely habitat for the origin of animals?
A. Deserts B. Temperate grassland C. Oceans D. Freshwater habitats E. Rain forests