Asexual vs Sexual Reproduction
This type of reproduction involves only one parent and produces identical offspring.
asexual reproduction
A scientist compares the forelimbs of a human, cat, whale, and bat.
All have the same bones arranged similarly, but different functions.
What conclusion can be made?
They share a common ancestor and adapted differently
This is the study of how organisms develop before birth.
embryology
This is the process humans use to breed organisms with specific traits.
selective breeding
This is the process by which organisms with favorable traits are more likely to survive and reproduce.
Natural selection
Type of reproduction combines genetic material from two parents
sexual reproduction
The human arm and a whale flipper are examples of this type of structure.
homologous structures
Early embryos of different species often look similar, suggesting this.
common ancestry
Farmers choosing crops that grow faster is an example of this.
Selecting for desired traits
Traits that help an organism survive and reproduce are called this.
Adaptations
Main advantage of sexual reproduction over asexual reproduction.
genetic variation
Structures that have similar function but different origins are called this.
analogous structures
This stage of development shows the most similarities among vertebrates.
early embryonic stage
This is another term for selective breeding.
Artificial selection
This process creates new genetic variations through changes in DNA.”
mutations (or genetic variation through recombination)
What organism reproduces asexually by splitting into two identical cells.
bacteria (binary fission)
This is what anatomical similarities provide evidence for.
evolution or common ancestry
This scientist used observations from nature and comparative anatomy to develop the theory of evolution by natural selection.
Charles Darwin
This is a possible disadvantage of selecting only desired traits.
Reduced genetic diversity
This describes how genes for helpful traits become more common over time.
Natural selection increasing favorable alleles in a population
What is one disadvantage of asexual reproduction in changing environments.
lack of genetic diversity leading to vulnerability
The wings of birds and insects are an example of this type of structure.
analogous structures
Why scientists compare embryos of different species.
To find evolutionary relationships
Breeding dogs for specific characteristics like size or color is an example of this.
Artificial selection (selective breeding)
If an environment changes, this explains why some organisms survive while others do not based on their genes.
Natural selection.
traits (genes) better suited to a changing environment are more likely to survive