What is one important difference between Chlamydomonas and Volvox?
Chlamydomonas is unicellular and reflects the ancestral state of the group, while Volvox is multicellular and has evolved numerous innovations including germ-soma differentiation, sexual dimorphism, and complex morphogenetic patterning.
How Volvox is different from other green algae?
How does Volvox compare to plants, animals, and other multicellular organisms with respect to the sorts of processes it has evolved? In a way, Volvox exhibits a relatively streamlined type of multicellularity. It possesses just two cell types, and these cells are not organized into tissues or organs.
What is the evolution of multicellularity?
At least some, it is presumed land-evolved, multicellularity occurs by cells separating and then rejoining (e.g., cellular slime molds) whereas for the majority of multicellular types (those that evolved within aquatic environments), multicellularity occurs as a consequence of cells failing to separate following …
What is the most significant step in the evolution of multicellularity?
The most significant step in the evolution of multicellularity is the addition of the “mitochondria” into the cell.
What era did multicellular organisms appear?
Large, multicellular life forms may have appeared on Earth one billion years earlier than was previously thought. Macroscopic multicellular life had been dated to around 600 million years ago, but new fossils suggest that centimetres-long multicellular organisms existed as early as 1.56 billion years ago
How many common ancestor do humans have?
1.07 billion ancestors
What is a female ancestor called?
How many races are there on Earth?
What is difference between race and ethnicity?
These two concepts (race and ethnicity) are often confused despite their subtle differences. Race includes phenotypic characteristics such as skin color, whereas ethnicity also encompasses cultural factors such as nationality, tribal affiliation, religion, language and traditions of a particular group.
What does race mean in English?
reword, answer, cite and explain
What is the meaning of ethnic groups?
Listen to pronunciation. (ETH-nik groop) A group of people who share a similar culture (beliefs, values, and behaviors), language, religion, ancestry, or other characteristic that is often handed down from one generation to the next. They may come from the same country or live together in the same area.
Is Hindu an ethnic group?
Hinduism is the largest ethnic religion, concentrated in its hearth of India. Its collection of holy writings are the Vedas. Its polytheistic & teaches reincarnation based on karma. In Hinduism, temples are homes to one or more gods, and are usually small since Hindus don’t worship in large groups.
What are two different types of ethnic identity and how are they defined?
There are four major components of ethnic identity (JS Phinney, Journal of Adolescent Research, 1992): Ethnic Awareness – understanding of one’s own and other groups. Ethnic Self-Identification – label used for one’s own group. Ethnic Attitudes – feelings about own and other groups.