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elena-s [515]
2 years ago
5

Describe how fish are able to breathe underwater using their gills​

Biology
2 answers:
Readme [11.4K]2 years ago
6 0

Answer:

A fish breathes by first opening its mouth to gulp water in and then opening its gill flaps to let water out.

Explanation:

Gills are feathery organs full of blood vessels. A fish breathes by taking water into its mouth and forcing it out through the gill passages. As water passes over the thin walls of the gills, dissolved oxygen moves into the blood and travels to the fish's cells.

Vesna [10]2 years ago
3 0
A fish breathes by taking water into its mouth and forcing it out through the gills.
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All organisms in the kingdoms Eubacteria and Archaebacteria ____________?
Basile [38]

Answer:

C

Explanation:

A prokaryote is a typically unicellular organism that lacks a nuclear membrane-enclosed nucleus.

6 0
3 years ago
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What 3 types of larvae begin as plankton?
Svetllana [295]

Answer:

sponges, crabs, sea stars, snails, worms, and fishes.

Explanation:

The animal groups with larvae in the plankton include, sponges, crabs, sea stars, snails, worms, and fishes. These tiny larvae are not the only ones out there floating around in the plankton.

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How are S waves and P waves similar? They shake the ground. They travel through liquids. They arrive at the same time. They vibr
Ksenya-84 [330]
They both shake the ground
4 0
3 years ago
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When one allele is dominant to another, what is the most common biological mechanism for this dominance?
MAVERICK [17]

Answer:

A. Dominant alleles often encode functional products, whereas recessive alleles often do not encode functional products

Explanation:

One gene can have it's variant forms called allele but in one individual only two allele form of a gene can be present. These two allele form can be the same(homozygous) or different(heterozygous). A dominant allele often encode a function protein of product while recessive allele often code for non- functional product.

Therefore when the dominant allele is present in the chromosome then function products are formed which can be seen in the phenotype and even a single dominant allele produce the functional product like in heterozygous condition so phenotype in heterozygous and homozygous dominant condition appears same. So the correct answer is A.

5 0
3 years ago
One parent has the blood type A and the other blood type B. What are the genotypes of the parents if they produce children with
horsena [70]

Human blood type is determined by co-dominant alleles. An allele is one of several different forms of genetic information that is present in our DNA at a specific location on a specific chromosome. There are three different alleles for human blood type, known as IA, IB, and i. For simplicity, we can call these alleles A (for IA), B (for IB), and O (for i).

Each of us has two ABO blood type alleles, because we each inherit one blood type allele from our biological mother and one from our biological father. A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO.

How are blood types related to the six genotypes?

A blood test is used to determine whether the A and/or B characteristics are present in a blood sample. It is not possible to determine the exact genotype from a blood test result of either type A or type B. If someone has blood type A, they must have at least one copy of the A allele, but they could have two copies. Their genotype is either AA or AO. Similarly, someone who is blood type B could have a genotype of either BB or BO.

A blood test of either type AB or type O is more informative. Someone with blood type AB must have both the A and B alleles. The genotype must be AB. Someone with blood type O has neither the A nor the B allele. The genotype must be OO.

How are ABO alleles inherited by our children?

Each biological parent donates one of their two ABO alleles to their child. A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).

Since there are 4 different maternal blood types and 4 different paternal blood types possible, there are 16 differnt combinations to consider when predicting the blood type of children. In the tables below, all 16 possible combinations are shown. If you know the blood type of the mother and father, the possible blood types for their children can be found.

What about the Rh factor? Can a father of blood type A+ have a child who is blood type A-?

The Rh factor genetic information is also inherited from our parents, but it is inherited independently of the ABO blood type alleles. There are 2 different alleles for the Rh factor known as Rh+ and Rh-. Someone who is "Rh positive" or "Rh+" has at least one Rh+ allele, but could have two. Their genotype could be either Rh+/Rh+ or Rh+/Rh-. Someone who Rh- has a genotype of Rh-/Rh-.

Just like the ABO alleles, each biological parent donates one of their two Rh alleles to their child. A mother who is Rh- can only pass an Rh- allele to her son or daughter. A father who is Rh+ could pass either an Rh+ or Rh- allele to his son or daughter. This couple could have Rh+ children (Rh- from mother and Rh+ from father) or Rh- children (Rh- from mother and Rh- from father).

6 0
2 years ago
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