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Y_Kistochka [10]
3 years ago
10

During prophase I, the pairing of homologous chromosomes results in the formation of a​

Biology
1 answer:
pychu [463]3 years ago
5 0

Answer:

Explanation:

During prophase I, the homologous chromosomes condense and become visible as the x shape we know, pair up to form a tetrad, and exchange genetic material by crossing over.

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The human genome comprises about 3 x 109 base pairs of DNA, and no two humans, other than identical twins, ever have been or wil
arsen [322]

Answer:

The correct answer is C.

Explanation:

The amount of genetic variation in two humans is 0.1 percent of their genome. Human genetic variation refers to the biological difference that exists in the human population.

The genetic variation in humans and apes genome is about 4 percent which is 35 million differences in a single nucleotide.

The genetic variation between apes and humans (Homo sapiens), according to scientists includes gene expression differences, variation in the transportable elements and type and number of repetitive genomic DNA transportable elements, the difference in the gene sequence, single nucleotide polymorphic, etc.

According to research, 97 percent of humans and orangutans genomes are identical. Based on evolution, among all apes, the orangutans are very special as it has been stable for the past 15 million years.

Therefore, is the genetic variation between humans and orangutans is the greatest.

8 0
3 years ago
DDT is an insecticide that was formerly used to control insects that would eat crops. It was banned from use in the 1970s.
Reil [10]
<h2>It contains toxins</h2><h2>It killed off bird populations.</h2><h2>It caused harm to human populations.</h2>

Explanation:

Let us understand the term DDT

DDT : Dichlorodiphenyltrichloroethane

  • This is a crystalline chemical compound
  • Basically used for protecting insects eating crops
  • It is colorless, odorless, tasteless
  • Initially used as pesticides

It killed off bird populations: Though it does not kill birds directly by consuming, it has indirectly damaged the egg by making the egg's shell too thin which gets broken easily.

It controlled diseases like malaria: Since this option talks about positive attribute of DDT, this option stands invalid. This chemical compound controls mosquitoes attacking the crop.

It caused harm to human populations: DDT causes vomiting, tremors or shakiness, and seizures

It contained toxins: It contains moderate toxins.

5 0
3 years ago
Is the current way of our living sustainable
Mila [183]
I think so because most people have a decent life although they may complain about some things in it.
3 0
3 years ago
The process shown in the diagram produces oxygen and sugar. Which
german

Answer:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

Explanation:

so ts Cellular Respiration

3 0
3 years ago
Read 2 more answers
Which part of the neuron is responsible for sensation
xz_007 [3.2K]

Answer: The central nervous system (CNS) is the collection of neurons that make up the brain and the spinal cord. The peripheral nervous system (PNS) is the collection of neurons that link the CNS to our skin, muscles, and glands. Neurons are specialized cells, found in the nervous system, which transmit information

Explanation:

4 0
3 years ago
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