Question

give two example of amphibians and avain​

Answer 1

Answer:

Amphibians are animals that can crawl on land, breath air mostly through lungs, although, most have partial respiration through their skin as well, but still are tied to the water, at least, to reproduce, needing the moisture to coat their eggs until they hatch into their tadpoles.

Reptiles were the first true land animals, developing the shelled egg. This way the pond could be kept anywhere. Reptiles all have lungs, keratinous body covering (like our hair and fingernails) to protect from moisture loss. And sexual reproduction. Most of their amphibian ancestors fertilized eggs as or after the female laid them.

Amphibians= Frogs, toads, salamanders, newts

Reptiles== Turtles, Tortoises, Crocodilians, Lizards, Snakes, Tuatara

Answer 2

Explanation:

Amphibian and bird karyotypes typically have a complex organization, which makes them difficult for standard cytogenetic analysis. That is, amphibian chromosomes are generally large, enriched with repetitive elements, and characterized by the absence of informative banding patterns. The majority of avian karyotypes comprise a small number of relatively large macrochromosomes and numerous tiny morphologically undistinguishable microchromosomes. A good progress in investigation of amphibian and avian chromosome evolution became possible with the usage of giant lampbrush chromosomes typical for growing oocytes. Due to the giant size, peculiarities of organization and enrichment with cytological markers, lampbrush chromosomes can serve as an opportune model for comprehensive high-resolution cytogenetic and cytological investigations. Here, we review the main findings on chromosome evolution in amphibians and birds that were obtained using lampbrush chromosomes. In particular, we discuss the data on evolutionary chromosomal rearrangements, accumulation of polymorphisms, evolution of sex chromosomes as well as chromosomal changes during clonal reproduction of interspecies hybrids.