Which lists the main components of Darwin’s theory of evolution

Answers

Answer 1

Answer:

Natural selection drives evolution
The evolution of a population happens slowly
organisms have common ancestors
organisms change over time

More recently than Darwin's theory some scientists have discovered the identity of the Last Universal Common Ancestor (LUCA)

Answer 2

Answer:

Explanation:

Got 100 on edg

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How does a human insulin gene become part of a bacterium's plasmid?

Answers

1. Scientist remove plasmids, small rings of DNA, from bacterial cells

2. An enzyme cuts open the plasmids DNA. The same enzymes removes the human insulin gene from its chromosomes

3. The human insulin gets attaches the open ends of the plasmids to form a closed ring

4. Some bacterial cells take up the plasmids that have the insulin gene

5. When cells reproduce, the new cells will contain copies of the engineered
plasmids. The foreign gene directs the cell to reproduce human insulin.

What is a kilocalories

Answers

A unit of Food energy

The members of these kindoms all have cell walls. Which kingdoms are they?

Answers

Answer:

Eubacteria, Archaebacteria, Plants, Fungi

Explanation:

The kingdoms Eubacteria, Archeobacteria, Plants and Fungi present organisms that have cell walls in their cells.

Remember that plant cells form plant tissues and are present in some microorganisms. In turn, animal cells lack cell walls, chloroplasts and vacuoles.

The main functions of the cell wall is to provide support, resistance and protection against external pathogens. Therefore, it collaborates with the absorption, transport and secretion of substances.

In addition, the cell wall acts as a filter for plant cells, as it allows the exchange of substances between other neighboring cells.

It also protects against excessive water entry, thus preventing osmotic lysis, that is, cell rupture. Another important function is that the cell wall shapes the various plant cells.

Answer: Archaebacteria, Eubacteria, Protista, Fungi, Plantae and Animalia.

What is the different forms a gene may have for a trait are called?

Answers

The different forms a gene may have for a trait are called alleles. Blood type is an example of alleles. They determine the hereditary characteristics an offspring gains from their parents.

Final answer:

The different forms a gene may have for a trait are called alleles. These are variations of a gene present on homologous chromosomes. A trait in an individual is determined by the two alleles inherited from their parents.

Explanation:

The different forms a gene may have for a trait are called alleles. These are variations of a gene that occur at the same relative locations on homologous chromosomes. For example, in a diploid organism where a single gene controls a characteristic, there can be two genetic copies, or alleles, that may or may not encode the same version of that characteristic.

A slight change in the sequence of nucleotides within a gene can result in different alleles that code for different traits. For instance, the different alleles for the gene that determines blood type in humans are sequence A, sequence B, and sequence O. The blood type is a trait determined by the two alleles that are inherited from the parents.

It's important to note that while an individual can only have two alleles for a given gene, it's common in a natural population to encounter more than two alleles for any given gene, a phenomenon referred to as multiple alleles.

Learn more about alleles here:

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Where do most algae live?

Answers

algae grows were it is damp

Describe the stages of the cell cycle. In your description of mitosis, list the four parts in the correct order.

Answers

Mitosis has 4 main parts:
1)Prophase - Chromosomes become visible, spindle fibres form, nuclear envelope dissolves.
2) Metaphase - Chromosomes line up in the middle of the cell.
3)Anaphase - Chromosome pairs separate to different sides of the cell by the spindle fibres.
4) Telophase - New nuclei are formed around each grouping of Chromosomes.
Cytokinesis then splits the cytoplasm into 2, forming 2 new daughter cells.

G1 phase - period of growth and activity. Also, the time where the cell performs its function (ex. liver cells producing insulin)

S phase- synthesis - stage where DNA replication occurs

G2 phase - continued growth, building of spindle fibres and centrioles, both structures needed for Mitosis phase.

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The relationship between abiotic and biotic environment is called ________. a)Biodiversity b)Ecosystem c)Symbiosis d)Survival

Using the table below, which of the materials would be able to scratch Quartz? Mohs Scale Index Mineral Hardness Common Objects diamond 10 corundum 9 topaz 8 quartz 7 orthoclase 6 steel file apatite 5 glass fluorite 4 calcite 3 copper penny gypsum 2 fingernail talc 1 fluorite talc diamond gypsum

Which of the following is not an example of predation?