Show:
Cancer & Genetics
Transcription & Translation
Stem Cells & Clonning
Evolution & Natural Selection
Speciation & Taxonomy
100
DNA & RNA are ____ acids. They consist of chemical units called _____
What is nucleic & nucleotides
100
The mRNA is read as 3 letter _____
What is codons
100
This stage of development allows cells to specialize and change shape
What is Cell differentiation
100
Evolution explains life’s unity and diversity by looking at ____ organisms from simpler ____ types. ___ ____ is a cause of evolutionary change. Individuals that possess beneficial traits (adaptations) survive and reproduce better
What is Present & ancestral. Natural selection
100
Speciation is the evolution of ___ species from ___ ancestral species
What is two & one
200
The four nucleotides in DNA are ___ ___ ___ and ___.
What is thymine (T), cytosine (C), adenine (A), and guanine (G)
200
Each RNA sequence makes a different ____
What is protein/polypeptide
200
Adult stem cells are ____ and can replace certain differentiated cell types
What is pluripotent
200
Darwin based his theory of natural selection on 4 key observations of nature: 1. ___ _ _ ___ 2._____ _ ___ 3. Struggle for existence 4. Differential reproductive success
What is 1. Variation in a population 2. Overproduction of offspring
200
Biologists define a species using two conditions: 1. A species must consist of a _____ 2. Members of a species are can interbreed and produce fertile and viable ____
What is population & offspring
300
RNA has _____ in place of thymine.
What is uracil (U)
300
Transcription and translation is divided into three phases
What is - Initiation – Elongation – Termination
300
Embryonic stem cells are ___ and can replace any cell in the body
What is totipotent
300
There are four major pieces of evidence that support the theory of evolution : 1. _____ 2. Biogeography 3. Comparative Anatomy and Development 4. DNA Similarities
What is Fossils
300
There are two major types of reproductive barriers that prevent species from interbreeding 1. Prezygotic barriers 2. Postzygotic barriers Prezygotic barriers prevent ____ and the formation of a single- celled zygote. Postzygotic barriers happen ___ fertilization
What is fertilization & after
400
The enzyme DNA ____ reads a strand of DNA and uses the base pairing rules to make a new copy
What is polymerase
400
In transcription a ___ copy of a DNA gene is made in the ____
What is messenger RNA (mRNA) & nucleus
400
The source of embryos for embryonic stem cell research is in ____ _____
What is vitro fertilization
400
Descent with modification predicts that evolutionary transitions should leave signs in the fossil record called ___ _____
What is transitional forms
400
Major geological and genetic events cause two types of speciation – Allopatric speciation. – Sympatric speciation Allopatric speciation is caused by _____ processes It can fragment a population into two or more isolated populations
What is geologic
500
Proto-oncogenes are normal genes that can become _____. Tumor-suppressor genes help prevent ___ cell growth
What is oncogenes & uncontrolled
500
Translation converts the mRNA language into a ___ product in the ____
What is protein & cytoplasm
500
___ ____ is cloning with the intention to produce patient matched embryonic stem cells to cure disease
What is Therapeutic cloning.
500
Distinct types of animals share anatomical organization – These comparisons reveal ____, the similarity in structures due to common ancestry. Some embryonic structures represent ___ structures – Found in ancestors but of no use in present day organisms
What is homology & vestigial
500
Sympatric speciation occurs if an individual gains extra __ and creates a reproductive barrier in part of the population. ___ is the identification, naming, and classification of species. The goal of Taxonomy is to reflect ___, which is the evolutionary history of a species
What is chromosomes & Taxonomy & phylogeny