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3 years ago

Which statement provides a possible explanation for the growth

Biology

1 answer:

Shtirlitz [24]3 years ago

5 0

Answer:

3) Uncontrolled cell division occurred as a result of gene mutations

Explanation:

Spontaneous modifications within the genome may occur during the process of cell division. When copies of the DNA inside the cell are made, these mutations cause errors; and can include small single nucleotide polymorphisms, and large scale additions or deletions across multiple genes.

Some, like somatic mutations, exist only inside vegetative (body) cells, that cannot be passed onto offspring. This is caused by several factors like

UV radiation,
chemical mutagens,
infective agents

UV radiation damages strands of DNA, by causing dimers to form; here, consecutive nucleotide bases covalently bond instead of those on the complementary strand. This conformational change causes errors in DNA proofreading and repair mechanisms where bases are not well-incorporated into the strand- tumors (clumps of uncontrolled cell growth) may form, resulting in melanoma, a type of skin cancer.

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Why do scientist need a common system of measurement?

EastWind [94]

So when one scientist turns around and says the mass of an electron is 9.10938291×10^-31 kilograms we know what a kilogram is and so we don't get an answer that it's 32949 microsmiths as he invented his own measurement because he needed one.

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2 years ago

What are two examples of decomposers that break down animal skin?

Ganezh [65]

Answer:

A decomposer is an organism that breaks down organic materials from dead organisms to obtain energy. These organisms are basically living recycling plants. Fungi, worms, and bacteria are all types of decomposers.

6 0

2 years ago

The change of England's Biston betularia moth populations from light colored to dark colored is an example of _____.

Gennadij [26K]

Answer:

The correct answer for this is: Microevolution.

Explanation:

The change of England's Biston betularia moth populations from light colored to dark colored is an example of 'Microevolution'.

Basically, the change that occurs over time in the allele frequencies within a group of species or population is known as microevolution.

The four processes due to which this change occurs include gene flow, selection (natural and artificial), mutation and genetic drift.

4 0

3 years ago

Molten rock rises in Earth's mantle and then sinks back toward the core in a circular pattern, this method of heat transfer is k

valina [46]

Assume as what happens in a pot of water as it get heats.. hot becomes less dense, rises and cools, becoming more dense then sinks- that's called CONVECTION
So D- is the right answer

5 0

3 years ago

Match the terms to their definition. 1. chromosome a cell whose nucleus is not bound by a membrane 2. eukaryote a genetic charac

yanalaym [24]

Answer:

1. chromosome: tight coils of DNA

2. Eukaryote: a cell that has a membrane-bound nucleus

3. Gene: a specific sequence of DNA nucleotides that carry hereditary traits

4. Prokaryote: a cell whose nucleus is not bound by a membrane

5. Trait: genetic characteristic of an individual

Explanation:

Chromosomes are the thread-like structures that appear during cell division. Each chromosome is made up of DNA tightly coiled with its packing proteins.

A cell is defined as eukaryote or prokaryote on the basis of the presence of a membrane-bound nucleus. The cells that lack the membrane-bound nucleus and other membrane-bound organelles are called prokaryotic cells. Example: bacteria.

The cells that have a membrane bound nucleus in which DNA is present are called eukaryotic cells. Example: Plant cells.

A stretch of DNA that code for a particular protein and thereby regulate specific genetic trait is called a gene. Genes are present on chromosomes and are carried from one generation to next to maintain the genetic traits.

The features of living beings regulated by the gene are called trait. Example: skin color, eye color, etc.

6 0

3 years ago