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AleksAgata [21]
3 years ago
9

When is a species considered to be endangered​

Biology
1 answer:
Ede4ka [16]3 years ago
5 0

Endangered Species. An animal or plant species is considered 'endangered' when it is at the risk of becoming extinct from the planet or from a particular region on the planet. Most of these species are considered to be endangered as they are at the risk of becoming extinct with only a few individuals surviving.

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How do cells combine and reproduce to create different combinations of DNA in babies?
zalisa [80]

Through the process of Meiosis

3 0
3 years ago
6. Applying Ideas: Suppose someone dumped left over motor oil on a driveway. Could this disposal
Rufina [12.5K]

Answer:

If they are looking for one BEST answer, it is the water.

If looking for top two, it is water and soil.

Realistically, however, this disposal can contaminate all 3.

Let me explain:

The motor oil that is dumped on a driveway first makes its way into the soil. The freshwater found in this soil becomes contaminated with motor oil and can eventually runoff into the ocean. Once this liquid evaporates, it then becomes air pollution. Shortest, best answer tho is water.

Hope this helps. Have a great day!

6 0
2 years ago
A student builds a model of a DNA strand.
insens350 [35]

Answer:

There is no attachment to this question, however, the base sequence on the model built by the student is: CAGCCATC

The options of the bases on the complementary model are:

A) CTACCGAC

B) GUCGGUAG

C) GTCGGAAG

D) GTCGGTAG

The answer is D

Explanation:

A DNA molecule is a polymer biomolecule made up of nucleotide bases. It is a double stranded molecule, with each strand containing nucleotides held together by hydrogen bonds. The pairing of nucleotides in one strand of DNA to another follows the COMPLEMENTARY BASE PAIRING RULE, which states that Adenine binds to Thymine (A-T) while Guanine binds to Cytosine (G-C).

According to this question, a student builds a model containing the base sequence: CAGCCATC, the model that contains bases that are complementary to the ones built by the student is: GTCGGTAG

4 0
3 years ago
Read 2 more answers
In addition to mutations, genetic variation can also arise during the formation of gametes during meiosis. During meiosis I, hom
amm1812

Answer:

Crossing over ensures that organisms of the same parents have differences in genetic content making them unique in one way or the other.

Explanation:

This question is describing the process of crossing over, which occurs only during prophase I of meiosis. During the process of crossing over, alleles of a gene are exchanged between non-sister chromatids of homologous chromosomes (mother and father chromosomes).

Hence, a unique GAMETE that has been genetically recombined will be formed. When these gametes are fertilized (egg) or fertilizes (sperm), organisms that are genetically different from their parents are produced. This ensures genetic variation, which is a difference in the genetic content of organisms.

5 0
3 years ago
The variance in a gene, which occur on a fixed spot on a chromosome is called a/an
Inga [223]

Answer:

allele

Explanation:

a spot on chromosome is an allele

4 0
3 years ago
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