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fiasKO [112]
3 years ago
13

A strand of DNA has these bases: AGC CAT GTA TAC

Biology
1 answer:
irakobra [83]3 years ago
5 0

Answer: The answer is c

Explanation:

DNA replication is semiconservative and at such, complementary base-pairing ensures that if adeinine is found on one strand, thymine is found on the other, and if guanine is found in one strand, cytosine is found on the other. complementary base pairing also helps to hold the double helix together by the formation of hydrogen bonds.

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The mass of an object doubles. What happens to the gravitational force between it and another object whose mass stays the same,
Delicious77 [7]

Answer:

part b is the right answer

Explanation:

The amount of the gravitational force doubles

5 0
3 years ago
Regulation slowly happens but produces long-lasting effects, whereas _____ regulation quickly takes place with short-term effect
vazorg [7]

Endocrine system regulation slowly happens but produces long-lasting effects, whereas nervous system regulation quickly takes place with short-term effects.

Endocrine system can regulate many things in the body that control the metabolism. The effect shouldn't be instant, but it should be good for long term effect. Nervous system need a much faster reaction because it responsible for "fight or flight" reaction. A slow nervous system will cause the organism caught by predator easier.

4 0
3 years ago
Predict phenotypes associated with nondisjunction of sex chromosomes.
Mnenie [13.5K]

Answer: The new daughter cells will have an abnormal amount of genetic material. That is called aneuploidy and it is the presence of an abnormal number of chromosomes. Different clinical conditions are the result of this nondisjunction.

Explanation:

Normal cells are diploids, that means they have two copies of each gene, one of each chromosome. So normal cells have two homologous chromosomes, one from each parent.

During anaphase of cell division, each pair of chromosomes is separated  by the mitotic spindle. The separated chromosomes are then pulled by the spindle to opposite poles of the cell, and eventually will end up in the new daughter cells.

Nondisjunction is the failure of homologous chromosomes to separate properly during cell division, so it is the miss segregation of them. The new daughter cells will have an abnormal amount of genetic material. <u>Different clinical conditions are the result of this nondisjunction.</u>

Sex chromosomes participates in sex determination of an individual. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY) So nondisjunction of sex chromosomes could be:

  • XX: one cell with no chromosome and the other cell with two X chromosomes.
  • XY: one cell with no chromosomes and the other cell with XY chromosomes.

According to which gametes are fused during fertilization, different phenotypes can be given. For example, if a gamete with one chromosome fuses with another gamete with two chromosomes, the result will be an individual with three chromosomes (it could be XXY, or XXX) called trisomy.

Triple X syndrome is characterized by an extra X chromosome in females. Those affected are often taller than average, but most females have a normal sexual development. Klinefelter syndrome is known XXY individuals, and it causes infertility in males, breast growth, less body hair and weaker muscles.

And if a gamete with no chromosome fuses also with another gamete with no chromosome, the result is a nullisomy. But due to the lack of genetic material, the nullisomic gametes are rendered unviable for fertilization.

And if a gamete with no chromosome fuses with another gamete with one chromosome (normal) the result is a monosomy, the presence of only one chromosome from a pair. The result can be an individual who is X or Y. People with Turner syndrome have one X chromosome and it is the only monosomy that is seen in humans because other cases monosomy are lethal.

Any of those examples is called aneuploidy and it is the presence of an abnormal number of chromosomes.

3 0
3 years ago
What is biology and the branches of biology
Bingel [31]

Answer: Branches: There are three major branches of biology – botany, zoology and microbiology.

Biology is: Biology Anatomy is the study of the internal structures of living things.

Explanation:. Botany is the branch of biology which deals with the study of different aspects of plants. Theophrastus is known as the father of Botany. Zoology is the branch of biology connected with the study of different aspects of animals.

Hope this helped!

6 0
3 years ago
Read 2 more answers
Think of examples of how the following parts of natural selection exist within mice populations:
Dovator [93]

Answer:

Overproduction i think

Explanation:

3 0
3 years ago
Read 2 more answers
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