TRUE OR FALSE: Mammals evolved from a lineage of synapsid reptiles. --True --False

options for 1 and 2:  -bird -mammal -reptile    options for 3:  -marsupials and placental mammals  -marsupials and monotremes -monotremes and placental mammals    options for 4:  -placental mammals  -montremes -marsupials

Tamarins and marmosets are small South American primates that are often polyandrous. True or False

Answer both to get a like.or don't attempt .Thanks only short explanation .

although polydactyly is a common limb malformation observed in humans and other species, no modern tetrapods have evolved a polydactylous phenotype as their predominant limb structure. Please present one hypothesis that explains this paradox, and describe how it does. (hypothesis should involve discussion of cellular-level processes, gene regulatory mechanisms, limb/digit patterning, and/or digit functions)

Crocodylians such as crocodiles, have essentially remained unchanged for hundreds of millions of years true false

Peramorphosis can occur when a feature, such as horns, ______in a descendent than in its ancestor. grows faster grows more slowly stops growing earlier starts to grow later

A similar trait that is found in two different species (ex. streamlined bodies, wings, etc). Whether this trait is homologous or analogous in these two species, and why or how.

A homologous trait between birds and mammals can be found in the shared layout of the forelimb bones. True or False