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Goryan [66]
3 years ago
12

A particular species of sea bird underwent a genetic mutation that resulted in big beaks. The larger size of beaks helped the bi

rd to break open clams and other mollusks for food. It also helped them defend themselves against predators. After many generations, almost all of the organisms in the population have big beaks. Tor which two reasons did this phenomenon occur?
(YOU CAN SELECT MORE THEN 1)
A. Natural selection
B . Mechanical isolation
C. Prezygotic barriers to reproduction
D. High genetic variation in the species
Biology
2 answers:
Alla [95]3 years ago
7 0

Answer:

The correct answers would be natural selection and high genetic variation in the species.

Natural selection refers to the natural phenomenon by which organisms which are better adapted or have survival traits tend to survive and reproduce more in the environment.

It leads to an increase in the frequency of the trait in a population.

Genetic variation refers to the sum total of all the genetic characteristics present in a population. Higher genetic diversity higher are the chances of a population to survive.  

Similarly, different sizes of the beaks are the result of high genetic diversity out of which large size beak was favored by natural selection.  

Ultimately, the large beak size trait spreads through the population.

shusha [124]3 years ago
4 0

Answer:

Natural Selection and High genetic variation in the specie

Explanation:

Did the quiz

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Black truffles are a unique type of fungi that are highly prized by chefs and food enthusiasts throughout the world. Which chara
jeka57 [31]

Answer:

The question is incomplete, here's the complete question;

Black truffles are a unique type of fungi that are highly prized by chefs and food enthusiasts throughout the world. Which of these characteristics is seen in truffles but not in common mushrooms?

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b. contains hyphae

c. has spores contained in ascus

d. has spores contained in basidia

Answer is C. Truffles has spores contained in the ascus.

Explanation:

Fungi like yeasts, molds and mushrooms are eukaryotic organisms which acts as main decomposers in the environment. Black truffles are aromatic edible fungi which belong to the ascomycota phylum. They are expensive and normally seen in the southern Europe. The main feature of the ascomycota is the ascus, a sexual spore bearing cell containing spores called ascospores. Black truffles are round shaped with black-brown skin and has small pyramidal cusps. It contains tightly interwoven hyphae (long filament like structure) and numerous asci (spore bearing cells). Each ascus contains some spores called ascopores, which is specific to fungi classified as ascomycetes. Mushrooms belong to the basidiomycota phylum. They are also composed of hyphae and reproduce sexually via the formation of specialized cells called basidia which have spores called basidiospores.

6 0
3 years ago
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aleksandrvk [35]

Answer:

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You're welcome friend <3

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exis [7]

Answer:

What passage

Explanation:

please provide an example

5 0
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Only 2 and 3 thank you
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2 would be A because fertilization is where the sperm cell and egg unite. 3 would be C because in the picture you can see how the division is occuring.
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