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☆☆☆☆☆It is a plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
Angiosperms (a plant whose ovules are enclosed in an ovary) are commonly referred to as "flowering plants", as opposed to gymnosperms, or "cone bearing plants."
Angiosperms form a phylum, the phylum Anthophyta. Angiosperms are also called anthophytes or magnoliophytes. The sporophyte is dominant and the gametophyte is the most reduced of all plants. There are so far more than 300,000 far named angiosperms. Angiosperms evolved in the Cretaceous. Many have close-bound mutualisms with pollinating insects.
Angiosperms are divided into monocotyledons and eudicotyledons (dicotyledons)
The diploid generation in the life cycle of a plant, and that produces haploid spores by meiosis.
A diploid form of a plant
Gene flow is genes moving between two populations.
the transfer of genes from one gene pool to another
two populations transferring genes
Actually, the theory that is now commonly accepted is that the extinction occured as a result of an asteroid impact.
They are thought to have separate paths of evolutionary development.
They developed along different evolutionary paths.
They had independent evolutionary development.
Natural selection occurs when four conditions are met:
1. There is variation among individuals.
2. That variation is at least partially heritable.
3. That variation is linked to differential reproductive success.
4. More individuals are born than can survive and reproduce.
The distribution of alleles changes due to random chance.
or
The allele frequency of a population changes due to a bottleneck effect. <apex>
Allopatric Speciation (geographic isolation) can lead to the formation of a new species because the population is split in two smaller populations by a physical barrier (river, canyon, mountain...).
it was a land plant.
The proteins in the amino-acids might have been responsible for the change in the hemoglobin between gorillas and humans.
Random processes are not part of the theory of evolution by natural selection.
yes
To find out how biological molecules could have first formed.
