Which would least likely result from a chromosomal change?a.death of the cell or organism
b.no effect on the cell or organism
c.enhanced ability of the organism to reproduce
d.change to the phenotype of the organism

Answers

Answer 1

Answer:

Answer;

c. enhanced ability of the organism to reproduce

Explanation;

-It is vital that humans have the correct balance of chromosome material. This is because the genes, that instruct the cells in our body, are found on the chromosomes.

-Any change in the number, size or structure of our chromosomes can mean a change in the amount or arrangement of genetic information.

-Human cells normally contain 23 pairs of chromosomes, for a total of 46 chromosomes in each cell. A change in the number of chromosomes can cause problems with growth, development, and function of the body's systems. These changes can occur during the formation of reproductive cells (eggs and sperm), in early fetal development, or in any cell after birth.

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An ecosystem is experiencing a devastating drought. It has not rained in weeks. How will the servere lack of rainfall affect the biotic factors in the ecosystem

Answers

Answer:

Drought impacts ecosystem in many different negative ways.

All biotic factors (that is living organisms) in an ecosystem depend on water.
It can also lead to losses or destruction of fish and wildlife habitat.
Lack of food and drinking water for wild animals.
Increase in disease in wild animals, because of reduced food and water supplies.
Drought can lead to increases in wildfire and insect outbreaks, local species extinctions, forest diebacks, and altered rates of carbon, nutrient, and water cycling – all of which can have real consequences for ecosystems and human communities alike

Plants and animals depend on water, just like people. When a drought occurs, their food supply can shrink and their habitat can be damaged.
Sometimes the damage is only temporary and their habitat and food supply return to normal when the drought is over.

Answer: There will be adjustment on water loss mechanisms and development of water conservation

Explanation:

All of the following are important integrated pest management (IPM) strategies, except:(1 point)
using good bugs to kill bad bugs
trimming off infested plant branches
* never sterilizing tools
using chemicals only when necessary

Answers

Answer:

The correct answer is "never sterilizing tools".

Explanation:

Integrated pest management (IPM), also known as integrated pest control (IPC), is a series of recommended practices to reduce and control the development of pests in plants of interest. Never sterilizing tools is not part of following a IPM approach. Actually, it is recommended to sterilize tools to eliminate any risk of contamination and spreading the pests that could result from handling contaminated plants.

The right answer for the question that is being asked and shown above is that: "never sterilizing tools.' All of the following are important integrated pest management (IPM) strategies, except: never sterilizing tools. Tools should be sterilized before bringing into use.

Twin brothers or twin sisters who develop from a single fertilized egg that splits in two are called ________ twins.

Answers

The missing word is: identical

The variety of organisms within an ecosystem is characteristic of which type of diversity? a. Genetic diversity b. Ecosystem diversity c. Species diversity d. Regional diversity

Answers

The question is asking us which type of diversity is characteristic of the variety of organisms within an ecosystem. These organisms would be for example frogs, treets, insects - different species, therefore the best answer is c. Species diversity. Each species would have its own genetic diversity, but this is too specific for the whole ecosystem - on the level of the ecosystem, species are a more useful distinction

Answer: C

Species diversity

Explanation:

Meiosis results in greater genetic variation thanasexual reproduction because it?? Help please

Answers

This is because of independent assortment at metaphase, crossing over at prophase I, and also, sexual reproduction occurs between two gametes each with different genetic material. There's random mating and also random fertilization (which sperm gets the egg).

Answer:Ninjbhwhi

Explanation:

What does it mean that organisms have a nearly universal genetic code?

Answers

Answer:

It means the way genes are expressed is the same in most organisms.

Explanation:

All living organisms use the same DNA or RNA as their genetic material. The manner in which the information in these genes are encoded or expressed is known as the GENETIC CODE. Genetic code comprises of all the codons that specifies amino acids in all living organisms. Only 20 amino acids in different sequential pattern makes up all proteins.

Nearly all living organisms use the same genetic code, as a codon does not specify a different amino acid in another organism. It is universal in all organisms that AUG codon specifies Methionine. Only slight differences to this pattern of genetic expression has been discovered, hence, the genetic code is said to be NEARLY UNIVERSAL.

Final answer:

The idea of a nearly universal genetic code refers to the common genetic 'language' shared by nearly all organisms. This means that, across an extraordinarily diverse array of species, the same sequences of DNA and RNA (the genetic code) translate to the same amino acids, which, in turn, build the same proteins. The universality of this code strongly suggests that all life shares a common origin.

Explanation:

The nearly universal genetic code refers to the fact that virtually all living organisms use the same codons, or sequences of DNA and RNA, to code for specific amino acids, which are the building blocks of proteins. This conservation of codons is seen across a vast array of species, with minor exceptions. For instance, if the mRNA encoding the globin protein in horses is transferred to a tulip cell, the tulip would synthesize the same protein, suggesting a common origin of all life on Earth.

The 64 possible combinations of triplet codons coding for 20 amino acids and with the occurrence of only one genetic code demonstrates the idea of degeneracy in the genetic code. This means that more than one codon can specify the same amino acid. For instance, unusual amino acids such as selenocysteine and pyrrolysine have been found in archaea and bacteria, which use unique codons.

Ultimately, the universality and degeneracy of the genetic code highlight the homologous characteristic shared by all species suggesting they share a common ancestor. This is powerful evidence for the shared biochemistry in all forms of life.