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garik1379 [7]
3 years ago
13

A cast fossil is formed when

Biology
1 answer:
Aloiza [94]3 years ago
8 0
I know the answer is c

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HELP I'LL GIVE BRAINLIEST
Lelechka [254]

Answer:

D. the movement of cells

Explanation:

Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types.

4 0
3 years ago
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Gregor Mendel's research consisted of using parent pea plants that were pure breeds. What genotype(s) would be considered pure b
laila [671]

Answer:

The genotypes thatwould be considered pure breeds are BB and bb

Explanation:

The genotype of an organism refers to an organism's complete set of genetic material or genes.

Genes are units of DNA that carries information for a particular physical or functional trait or character in an organism. Some genes act as instructions to make proteins while some genes do not code for proteins. The proteins made by a gene expresses the traits and characters of that organisms. Genes for a particular trait may have one or more variants known as alleles.

In Gregor Mendel's research using pea plants, flower colour in a pea plant had two different alleles; one for red flower colour and one for white flower colour. If a plant had the same allele for flower colour, the plant was considered a pure breed.

For example, given B was the allele for red flower colour and b was the allele for white flower colour, a plant having the two alleles for white flower colour bb, is a pure breed. Similarly, a plant having the two alleles for red flower colour, BB is a true breed.

8 0
3 years ago
Why cant yyou see the membrane of elodea cells?
aev [14]
The answer is because the cell membrane is pressed against the cell wall.
7 0
3 years ago
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Which of the following moons is larger than the planet Mercury? A. Europa B. Titan C. Io D. Earth's Moon
Nata [24]
The answer is B, Titian
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Why might it be beneficial for a prokaryote to have the ability to regulate expression of particular genes, rather than just exp
LekaFEV [45]
It allows the cell to adjust a metabolic activity to environmental conditions. That enables the cell to save a lot of energy as transcription and translation of genes is very energetically costly
6 0
3 years ago
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