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PilotLPTM [1.2K]
3 years ago
15

Starting with a population of genetically identical mice, you discover two new independent mutant strains in which all of the an

imals have epileptic seizures. in both strains, you know that the epileptic seizures are due to a single dna mutation. you cross a mutant mouse from one strain to a mutant mouse from the second strain and find that none of their many offspring undergo spontaneous seizures. from this experiment you would conclude that the two mutant strains of mice most likely have mutations in:
Biology
1 answer:
Papessa [141]3 years ago
3 0
Had to look for the options and here is my answer. Based on the given experimentation above regarding some genetically identical mice, you would conclude that the two mutant strains of mice would most likely possess mutations in "<span>the same gene, but not necessarily the same DNA base position". Hope this answers your question.</span>
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in pinus sp. male cone matured earlier than female cone . describe how this species the success of pollination​
konstantin123 [22]

In pinus species male cone matured earlier than female cone because it male cone producing more pollen grain.  

Explanation:

Pinus species don't have flowers who has nectar and pollen. Pine trees can’t attract bees and butterflies for pollination. Wind play vital role for pollination in pinus species tree.

The male cones produce producing pollen grains, which drift to the female cones on other trees. After few years mature the non-fertilized female pine cone mature to become the woody cones  

8 0
3 years ago
NO LINKS The arctic is an environment in which the temperature is often below freezing. The polar bear and the walrus are both a
vredina [299]

Answer:

Polar bears are found in very cold parts of the world where temperatures can drop as low as -20° Fahrenheit (-29° Celsius). Without proper protection, this weather can be deadly, so polar bears stay warm by utilizing their thick fur and fat, or blubber. Polar bears have evolved along with other Arctic animals to take advantage of minimal warmth, and can sometimes actually become too warm because their bodies are so efficient at trapping heat.

As for walrus', they cannot put on a coat to stay warm, but they can use layers -- layers of blubber! A walrus's hide is about one inch thick. Tucked underneath this tough skin is a layer of blubber. This layer of fat is from three to six inches thick. Just like our layers of clothes, a walrus's layer of blubber helps it stay warm.

Explanation:

Hope this helps! :)

8 0
3 years ago
Read 2 more answers
Different between physical and biological aspect<br>​
vesna_86 [32]

Answer:

The Physical environment refers to the inanimate things like air, water, soil, rock, etc. the biological environment is all living things big and small, plant or animal, and microbes, etc.

Explanation:

The Physical environment refers to the inanimate things like air, water, soil, rock, etc. the biological environment is all living things big and small, plant or animal, and microbes, etc.

6 0
2 years ago
Select all that apply! Chromosomes _____.
topjm [15]

Option A,B,C,E

Chromosomes are rod shaped structures that contain DNA, are located in the nucleus, occur in numbers that are the same for all members of a certain species, are organized into karyotypes for scientists to analyze

<h3><u>Explanation:</u></h3>

A chromosome is the threadlike arrangement of DNA and protein-containing genetic erudition. Chromosomes are packaged and saved inside the nucleus. Various species have distinct amounts of chromosomes. An organism's complete assortment of chromosomes can be observed by practicing pictures of cells dividing. These pictures are then designed to produce a karyotype.

All the various chromosomes of an organism get up that organism's genome.DNA is the construction block of the genetic material observed in all living things. A very long chain of DNA can create a chromosome. In these chromosomes are areas designated as genes that code for particular proteins.

5 0
3 years ago
Which can disrupt the cell cycle
Tanya [424]

Answer:

cancer

Explanation:

Cancer can disrupt the cell cycle. Cancer is unchecked cell growth. Cell cycle is the process in which cells progress and divide. Mutations (random and sudden spontaneous changes) in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death.

8 0
3 years ago
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