Description

heritable trait or behavior in an organism that aids in its survival and reproduction in its present environment
adaptive ______- speciation when one species radiates to form several other species
______ speciation- speciation that occurs via geographic situation
______polyploid- polyploidy formed between two related, but separate species
condition of a cell having an extra chromosome or missing a chromosome for its species
______polyploid- polyploidy formed within a single species
type of reproductive isolation that occurs when a specific behavior or lack of one prevents reproduction from taking place
process by which groups of organisms independently evolve to similar forms
allopatric speciation that occurs when a few members of a species move to a new geographical area
process by which groups of organisms evolve in diverse directions from a common point
prezygotic barrier occurring when closely related individuals of different species mate, but differences in their gamete cells prevent fertilization from taking place
________ speciation model- model that shows how species diverge gradually over time in small steps
habitat ______- reproductive isolation resulting when species' populations move or are moved to a new habitat, taking up residence in a place that no longer overlaps with the same species' other populations
______ structures- parallel structures in diverse organisms that have a common ancestor
offspring of two closely related individuals, not of the same species
area where two closely related species continue to interact and reproduce, forming hybrids
reproduction of individuals with favorable genetic traits that survive environmental change because of those traits, leading to evolutionary change
reproductive isolation mechanism that occurs after zygote formation
reproductive isolation mechanism that occurs before zygote formation
model for rapid speciation that can occur when an event causes a small portion of a population to be cut off from the rest of the population
continued speciation divergence between two related species due to low fitness of hybrids between them
situation that occurs when a species is reproductively independent from other species; behavior, location, or reproductive barriers may cause this to happen
formation of a new species
group of populations that interbreed and produce fertile offspring
speciation that occurs in the same geographic space
______ isolation- differences in breeding schedules that can act as a form of prezygotic barrier leading to reproductive isolation
genetic differences among individuals in a population
_____ structure- physical structure present in an organism but that has no apparent function and appears to be from functional structure in a distant ancestor
allopatric speciation that occurs when something in the environment separates organisms of the same species into separate groups

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Evolution part 2

Crossword

Geology

Crossword

AP biology

Crossword

Frequently Asked Questions

What is a crossword?

Crossword puzzles have been published in newspapers and other publications since 1873. They consist of a grid of squares where the player aims to write words both horizontally and vertically.

Next to the crossword will be a series of questions or clues, which relate to the various rows or lines of boxes in the crossword. The player reads the question or clue, and tries to find a word that answers the question in the same amount of letters as there are boxes in the related crossword row or line.

Some of the words will share letters, so will need to match up with each other. The words can vary in length and complexity, as can the clues.

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Are crosswords good for students?

Crosswords are a great exercise for students' problem solving and cognitive abilities. Not only do they need to solve a clue and think of the correct answer, but they also have to consider all of the other words in the crossword to make sure the words fit together.

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If this is your first time using a crossword with your students, you could create a crossword FAQ template for them to give them the basic instructions.

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