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tatiyna
3 years ago
8

When do a scientific theory change

Biology
2 answers:
fgiga [73]3 years ago
7 0
When more information is available
Pavel [41]3 years ago
6 0
A scientific theory changes when there is more information available about what the theory covers.
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Systematists have used a wide variety of traits to reconstruct the phylogenies of particular groups of organisms. Which one of t
NemiM [27]

Answer:

All of the above traits combined

Explanation:

Phylogeny is an evolutionary history of development of a certain species or taxonomic group.

The purpose of phylogenies is to represent evolutionary relationships among a group of organisms.

During the reconstruction of phylogenies. Systematists often use a variety of traits in order to produce a good estimate of a phylogeny.

The use of molecular traits, gross morphological traits, behavioral and biochemical traits  combined can give a good estimate of a phylogeny.

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3 years ago
Which type of cell is responsible for causing apoptosis in cancer cells and virus-infected cells?
lbvjy [14]
The answer is natural killer cells.

Natural killer cells are a type of lymphocytes and they are important for the innate immune system. They recognise stressed cells much faster than other immune cells. Their response is rapid and usually only a few days after a viral infection. They also respond to <span>cancer cell </span>formation. While other immune cells can detect only those harmful cells that have specific markers on the surface of the cell membrane, natural killer cells can even detect those cells that miss markers for apoptosis.
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3 years ago
A set of chemical reactions within an organism
RSB [31]
Metabolism is a set of chemical reactions happening within an organism. These reactions are necessary to maintain the living state of cells, allowing them to reproduce, grow, and respond to environment.
8 0
3 years ago
A survey that includes only people who choose to respond is susceptible to
sammy [17]

Answer:

I'm pretty sure its B. voluntary-response bias

5 0
3 years ago
FILL IN THE BLANKS: Gametes are produced by meiosis, which are either __________ or _________.
erik [133]

Explanation:

Meiosis produces haploid gametes (ova or sperm) that contain one set of 23 chromosomes. When two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes.

7 0
2 years ago
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