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3 years ago

Identify the mechanism for isolation described using the drop-down menus.

Biology

1 answer:

muminat3 years ago

5 0

The correct answer is option D, Temporal isolation

Temporal isolation is the mechanism which prevents the mating of closely related species living in the same ecosystem. Basically the reproductive barriers prevent these species from interbreeding. Temporal isolation is a prezygotic barrier that causes “time isolation” between the breeding period of two closely related species. The difference in time could be “difference in time of day”, “ difference in season of mating”, “difference in months” and in some cases “ difference in years”.

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Mendel found out everything about genetics and we have not learned anything new about genetics in the last 160+ years. true or f

Anvisha [2.4K]

Answer:

false

Explanation:

there has been many advancements in genetics ever since Mendel's discoveries

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2 years ago

If a branch is cut from a tree ,after some hours the stem remains firm explain ?

hjlf

Answer:

The leaves no longer have water, which means that there is little osmotic pressure which keeps it turgid.

Explanation:

The stem still contains water because of the capillary action that occurs. However, since there is no strong attraction, the water cannot be pulled to the leaves.

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2 years ago

A radula is a specialized feeding organ used to scrape material off of a substrate for ingestion, much like a cheese grater scra

Sergio039 [100]

Answer:

D. mass feeder

Explanation:

A) suspension feeder

B) fluid feeder

C) deposit feeder

D) mass feeder

Suspension feeder requires capturing of food that are suspended in water through the use of specialized organs.

Fluid feeding involves feeding on liquid (such as blood) emanating from other organisms.

Deposit feeding involves feeding on sediments

Mass feeding involves ingestion of scraps of different food materials.

Hence, the correct option is D.

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3 years ago

AUGGCGUUU which of the following DNA strands could have been the template for this RNA?

Delvig [45]

Answer:

3' TACCGCAAA 5'

Explanation:

Transcription is the process by which a particular DNA sequence (e.g., a gene) is used as a template to synthesize a complementary RNA sequence that grows in a 5′ → 3′ direction. This RNA molecule is usually a messenger RNA (mRNA) which is then used to synthesize a polypeptide chain (i.e., a protein) by a process called translation. The complementary RNA molecule produced during transcription is synthesized according to the base pair rules, i.e., Adenine (A) bases always pair with Thymine (T) bases, while Guanine (G) bases always pairs with Cytosine (C) bases. In RNA, Uracil (U) bases pair with adenine, thereby replacing thymines during transcription.

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2 years ago

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3 years ago