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harina [27]
3 years ago
14

Cool facts about blue sharks

Biology
2 answers:
enyata [817]3 years ago
5 0
The aerodynamic shape of the blue sharks allows it to move elegantly through the ocean.
ipn [44]3 years ago
3 0
<span>1.Blue sharks have electroreceptors concentrated in their heads. They can sense a heartbeat of another fish from several miles away. The organ is called the “ampullae of Lorenzini.



2.”They are among the few Viviparous sharks in the ocean. Females give birth to live pups




3.When mating, male sharks are very aggressive. They are seen biting the females but that is part of mating. The skin of female sharks is 3 times thicker than male skin.


4.Blue Sharks survive poorly in captivity. Most of them survive for less than a month. Although the record of blue shark kept at captivity is 7 months.Blue Sharks are seen jumping out of the sea in search of their prey.


5.As Blue Sharks are often seen in groups, and sometimes referred to the “wolves of the sea.

6.”The main predators of blue sharks are humans. Approximately 15 to 20 million Blue Sharks are killed every year due to humans who capture them. They are hunted for their skin, fish oil, teeth and fins.
<span>

7.Blue sharks are listed as “Near Threatened” in the Red list of IUCN.</span></span>
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Explanation:

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On the planet Kermit, in the Muppet population, there are two autosomal loci of interest. The first locus has alleles A and a, a
astra-53 [7]

Answer:

The values that most closely represent the expected number of Janice blonde-haired offspring is 252 individuals, option C.

Explanation:

<u>Available data</u>:

  • Two diallelic genes acting in a recessive epistatic manner to express hair color
  • Allele A is dominant over the allele a
  • Allele B is dominant over the allele b
  • A_B_ Cookie monster blue
  • aaB_ Elmo red
  • __bb Janice blonde

When talking about epistasis, we are referring to an interruption. These are interactions between genes located in different loci in the same chromosome. An epistatic gene can alter, influence, or suppress the expression of a hypostatic gene. When the epistatic gene is recessive, the interaction is known as <u>recessive epistasis</u>.  

Observing the altered phenotype proportions of the offspring can reveal which interaction is operating in the trait determination.  

In recessive epistasis, the proportion is 9:3:4.

Cross: Between two doubly-heterozygous

Parentals) AaBb    x    AaBb

Phenotype) Cookie-monster blue-haired individuals

Gametes)  AB, Ab, aB, ab

                 AB, Ab, aB, ab

Punnett square)     AB       Ab        aB         ab

                 AB      AABB    AABb  AaBB    AaBB

                 Ab      AABb    AAbb   AaBb    Aabb

                  aB     AaBB     AaBb   aaBB    aaBb

                  ab     AaBb      Aabb   aaBb    aabb

F1) 1000 individuals

     9/16 individuals are expected to be Cookie-monster blue-haired, A-B-

     3/16 individuals are expected to be Elmo Red, aaB-

     4/16 individuals are expected to be Janice blond, A-bb + aabb

16 ------------------------------------------- 1000 individuals

4 Janice blond individuals ---------- X = 250 individuals

So, 250 individuals are expected to be Janice blonde. The observed number might vary a little bit from this value.  The values that most closely represent the expected number of Janice blonde-haired offspring is c = 252 individuals

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3 years ago
If air temperature increased, how would it affect precipitation
Vlada [557]
It is more likely to cause precipitation as the oversaturated air forms moisture droplets that fall as precipitation. ... As the warm air cools, it loses its ability to retain moisture and becomes saturated, thus creating precipitation.
6 0
3 years ago
Read 2 more answers
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