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vagabundo [1.1K]
4 years ago
13

explain the genetic events that enable so many different cell types to arise from one unspecialized cell

Biology
1 answer:
LiRa [457]4 years ago
4 0
All cells in the body have the same genetic material, e.g. they have same DNA. However, not all genes are active at the same time and in all cells. Thus, different genes are transcribed in different specialised cells. There are transcription factors that control which genes will be transcribed and which will be suppressed. Also, specialised cells in an embryo release signalling proteins that help in cell differentiation.
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What is the function of the primary and secondary pharyngeal bars in Amphioxus?
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:) please help!!! Briefly describe the traits seen in each genotype:
kolezko [41]
<h2>Answer 1 with Explanation</h2>

Homozygous dominant- It can be an organism if it carries two copies of the same dominant allele as homozygous which clearly means that the organism has a pair of models that is the corresponding allele for a gene. This gene originally belongs to a particular gene that has same alleles on both homologous chromosomes. It is assigned to by capital (XX) in the subjective terminology.

<h2>Answer 2 with Explanation</h2>

Heterozygous dominant is an organism that carries two different alleles of a gene. Though this is originally is referred to as (Tt). Heterozygous means that an organism has two different varieties of the gene within the system of dominant, the protein each makes is slightly different from one another and the organism has both tall and short versions within the dominant.

<h2>Answer 3 with Explanation</h2>

Homozygous recessive is described as an organism that carries two copies of the same recessive allele in the living organisms while they are in process of growth. A recessive gene is one that has to be homozygous to have an effect on the plant's or animal's traits that is naturally in process. This process of homozygous is is referred to by the lower case (xx).

3 0
3 years ago
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kaheart [24]

Answer:

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6 0
3 years ago
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miss Akunina [59]

Answer:

1. interactions

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13. second

Explanation:

An ecosystem consists of a community of living organisms interacting  with each other and the environment. The source of energy that fuels most ecosystems is the sun. Plants use the Sun’s energy to produce food in a process called photosynthesis.

Organisms that use energy from the Sun or energy stored in chemical compounds to produce their own nutrients are called autotrophs. They are also called producers because most other organisms depend on autotrophs for food and energy. Heterotrophic organisms that can’t make their own food may obtain nutrients by eating other organisms. A heterotroph that feeds only on plants is called an herbivore. Herbivores are also called first order heterotrophs. Heterotrophs that feed on other herbivores are second order heterotrophs.

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