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True [87]
2 years ago
6

The diploid number of chromosomes in a species is always

Biology
1 answer:
Citrus2011 [14]2 years ago
6 0
The correct answer is (b) twice the haploid number :)
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Select all of the answers that apply.
olga_2 [115]

The answers are : C, B


I hope that's help:)

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3 years ago
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The epigastric region is a portion of the cavity. multiple choice pelvic pleural vertebral abdominal
svetlana [45]

The epigastric region is a portion of the <u>abdominal </u>cavity.

The correct option is d.

The greatest hollow area in the body is the abdominal cavity. Its lower limit is the upper plane of the pelvic cavity, and its upper barrier is the diaphragm, a sheet of muscle and connective tissue that divides it from the chest cavity. The spinal column, as well as the abdomen and other muscles, encircle it vertically.

The epigastrium is the top portion of your abdomen that is immediately below your rib cage. The epigastrium houses your pancreas and the duodenum, a section of your small intestine. Additionally, your stomach and liver are partially located here.

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6 0
1 year ago
How have the historic levels of melanin in human populations changed due to migration? (1 point)
MaRussiya [10]

Answer:

i would say A

Explanation:

4 0
2 years ago
How does the sexual life cycle of the human species introduce genetic variations?
kari74 [83]

Answer:

In humans, genetic variations are caused because humans reproduce by a sexual life cycle which is termed as meiosis. In such a life cycle, the offspring receives half the chromosomes from the mother and half from the father. Crossing over and  random assortment of chromosomes are two phenomenons which occur during meiosis. Due to these two phenomenons, genetic variations are caused.

During crossing over, the exchange of DNA segments between the homologous chromosomes takes place which brings about the genetic variations.

5 0
3 years ago
In a cell undergoing mitosis, chromatin fibers lengthen, the mitotic spindle is broken down, and nuclei start to
Leto [7]
Answer:
Cytokinesis
Explanation:
It is the first stage


8 0
2 years ago
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