Answer:
1. chondrichthyan
2 lateral line system
3. lobe fins
4 operculum
5 ray finned fish
6 swim bladder
Explanation:
A fish with a flexible cartilage skeleton is defined as a chondrichthyan
A lateral line system is a column of organs that are sensitive to small change in water pressure
Fish with strong pectoral and pelvic fins with rod-shaped bones are known as lobe fins
The operculum movement helps certain fish to breathe without swimming.
A fish with a bony skeleton and long, flexible fins is defined as ray-finned fish
A swim bladder is the gas-filled bag used in several fishes.
Answer:
Increase
Explanation:
Crossing over is the process by which genetic information is exchanged between two homologous chromosomes
Independent assortment describes the way in which traits are inherited: i.e. different alleles on different chromosomes are inherited independently of one another (in a simple example, a tall green plant can cross with a yellow small plant to make a tall yellow plant or a small green plant - the two traits aren't inherited together.
Therefore, both of these increase the amount of variety present in the gamete, as they both generate new combinations of alleles to pass on to the next generation.
Asexual reproduction produces genetically identical offspring and sexual reproduction creates variation in the offspring. When the environment changes and it affects the asexual offspring it will affect all identical copies whereas since the sexual offspring have more variation, they are more likely to survive.
Answer:
Biogeography: Animals can come from certain areas and move to other areas causing their adaptations and therefore traits to change.
Radioactive Dating: The time zone fossils come from can be dating to certain times where there species may have changed. This can also be said for Fossils.
Comparing anatomy and development: There characteristics of certain biological features can differentiate species and their traits to determine which animal has came from another and other relative species.
Genetics and Molecular Biology: Genes can be passed onto on another and looking at genes passed down from one species to the next determines evolution of traits.
