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Phantasy [73]
3 years ago
7

Explain why two siblings except identical twins have the exactly the same alleles

Biology
1 answer:
Natali [406]3 years ago
5 0

Answer:

having exactly the same DNA sequences, twins start accumulating genetic variation from the earliest stages of development, researchers at Iceland-based company deCODE genetics found, meaning that one twin harbors variants that aren't present in the other.

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How are the 3 stages of cell division similar to how new animals are created?
Vera_Pavlovna [14]

Answer:

Cell divison is defined as the process in which a parent cell split into two or more daughter cells. There are three stages of cell division that includes interphase, mitosis/meiosis and cytokinesis.

In the interphase the proteins, enzymes and cell organelles are formed and at the end of this phase single strand chromosome becomes a double strand carrying genes.

In the meiosis (in sexual reproduction) or mitosis (asexual reproduction) phase, divison of nucleus takes place. Meiosis gives rise to geneticaly different cells due to crossing over while mitosis leads to  identical cells .

Cytokinesis occurs cocurrently after meiosis or mitosis in which cytoplasm of a parental cell divides into two daughter cells each with identical chromatin.

Creation of new animals are also undergo these 3 stages of cell division that is interphase, meiosis (eukaryotes)/mitosis (prokaryotes) and cytokinesis. Majority of animals (eukaryotes) undergo meiosis phase because their mode of reproduction sexual and have genetic variation due to crossing over of chromosomes and produces 4 daughter cells at the end cell division.

Hence, the 3 stages of cell division is similar to craetion of new animals.

5 0
3 years ago
How does a producer create its own food?
AleksandrR [38]

photosynthesis!!!

Leaves from the plant absorb light from the sun. Leaves of plants also absorb the air that people breathe out, carbon dioxide

4 0
3 years ago
Increased diversity among species
REY [17]

Answer:

Strictly speaking, species diversity is the number of different species in a particular area (species richness) weighted by some measure of abundance such as number of individuals or biomass. ... An ecosystem where all the species are represented by the same number of individuals has high species evenness.

5 0
3 years ago
In prokaryotes, functionally related genes are usually clustered in a single operon. what has been found to be the case in eukar
Andre45 [30]
Genes in eukaryotes are dispersed and not clustered onto a single operon
5 0
3 years ago
Fungi are both beneficial and destructive. This fungus is living in and on the tree seen here. This is a ____________ relationsh
Gwar [14]

Answer:

The correct answer will be option-D.

Explanation:

Fungi forms symbiotic or mutual relationship with higher plants known as mycorrhizae.

These mycorrhizae could be present on the tree parts like stem which form the ectomycorrhizae and some live inside the plant parts like in the roots and known as endo-mycorrhizae.

The fungi provide useful nutrient like they absorb phosphorus from the soil and provide it to the plants and in return plant give shelter to these fungi.

Thus, option-D is the correct answer.

3 0
3 years ago
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