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uranmaximum [27]
3 years ago
9

4. What was Lamarck's theory of evolution?​

Biology
2 answers:
Viefleur [7K]3 years ago
7 0
Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.
valina [46]3 years ago
5 0
The theory was that physical changes in organisms during their lifetime such as greater development of an organ or part through increased use could be transmitted to their offspring.
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Help me ASAP please
Westkost [7]

Answer:

C

Explanation:

5 0
3 years ago
Where else is amylase secreted in the digestive system?
Len [333]
There is 2 types of amylase. But they have to same function which is to digest starch to Maltose. They r salivary amylase and pancreatic amylase.
Salivary amylase is produced in the salivary glands, while pancreatic amylase is produced in the pancreas
8 0
4 years ago
An individual has a genetic disorder in which their cell is not forming the correct protein structure for the cell membrane to a
Andru [333]

Answer:

The type of regulation of gene expression that would have the greatest chance of success is Posttranslational control (E).

Explanation:

The defect is found on the structure of the protein, this means that the process of formation of the protein and the codons responsible for each amino acid in the protein is in correct order, this set the transcriptional and translational process aside as being correct.

Therefore, the problem lies in the formation of secondary or tertiary structure of the protein which requires a good number of proteins also, wherein lies tha main problem in the cell membrane protein. Thus the regulation of the posttranslational process and correction of the proteins needed at this stage will give the best chance of success.

3 0
3 years ago
Explain how fertilization occurs
alex41 [277]
<span>I'm assuming this in plants.

Brief-ish answer:

"Fertilization in plants occurs when pollen grains are transported from anthers to stigma. When ripe pollen from an anther catches on the stigma of the same kind of flower, each pollen grain sends out a small thread-like tube."

Here's a fuller answer:

"</span>Fertilization occurs after pollination, when pollen grains land on the stigma of a flower of the same species. During this time, a series of events take place leading to the formation of seeds. A pollen grain on the stigma develops a tiny tube that runs down the style of the ovary. The pollen tube contains a male gamete which meets the female gamete in the ovule. Fertilization occurs when the two gametes combine and their chromosomes join. The resulting product is a normal complement of chromosomes, with some from either parent flower. The fertilized ovule forms a seed, which consists of a food reservoir and an embryo that later develops into a new plant. In gymnosperms (conifers) male gametes are enclosed in pollen grains and are transmitted by wind or insects to the female reproductive organs. Fertilization in angiosperms (flowering plants) occurs when insects or other animals transport the pollen to the female reproductive organ (pistil).<span>
</span><span>Fertilization is the fusion of gametes to launch the development of a new individual organism. In animals, the process entails the combination of ovum with a sperm, leading to the development of an embryo. Fertilization in plants occurs when haploid gametes meet to create a diploid zygote, which eventually forms an embryo.</span><span>"

source: </span>https://www.reference.com/science/plant-fertilization-occur-ccf48c80e72fc410
5 0
3 years ago
What is A stem cell is
polet [3.4K]

<em>by definition- a stem cell is an undifferentiated cell of a multi-cellular organism which is capable of giving rise to indefinitely more cells of the same type, and from which certain other kinds of cell arise by differentiation.</em>

an example

Stem cells have the potential to be whatever they want to be. Stem cells are able to develop into many different types of cells and can repair your body.

there are two types

adult stem cells and embryonic stem cells

6 0
4 years ago
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