The arrangement of homeotic genes along chromosomes of vertebrate and invertebrate animals corresponds to the expression pattern of the genes along the anterior-posterior axis of the developing embryo.
<h3>What are homeotic genes?</h3>
- Homeotic genes are a group of body pattern forming genes which control the development along the anterior- posterior axis of the developing embryo.
- These encode transcription factors which control and specify the genes involved in body patterning. These provide identity to the segments during embryo formation.
- Genes located in the 5’ end act on posterior side whereas the genes on 3’ end act on anterior region.
- Homeotic genes are evolutionary conserved and control body specification, patterning and differentiation.
- The loss of function of any of the gene changes the body pattern and affects the development.
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Answer: The answer is A. rare
Explanation:
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Answer:
>consist of fats, phospholipids, and steroids
>include cholesterol and saturated fats
CHROMATIN : It can be simply referred to as genetic material in loose or normal form. It can be DNA or RNA inside the plant or animal cell's nucleus.
2. CHROMOSOME : When the chromatin material is condensed prior to the cell division and get highly organized form that can be visible in form of proper structures have two chromatids, they are called chromosomes.
The process of formation of chromosomes from chromatin occurs mainly in prophase of Mitosis or Prophase II or Prophase I of Meiosis.
3. CHROMATID : Chromatid is also referred to as sister chhromatids since there are two chromatids present in one chromosome that are almost similar. Chromatids can be considered as arms of chromosomes which are attached at a point centromere (please see the image for better understanding).
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