Explanation

Bacteriophages are viruses that infect bacteria and are typically much smaller than other viruses like adenoviruses.

While adenoviruses range in size from 70-90nm, bacteriophages can be as small as 20nm. 

Explanation

 The pair "Fish - Internal Fertilization" is incorrect; most fish use external fertilization, meaning the sperm and egg meet outside the female's body, not inside. 

Explanation

Triploblastic animals have three germ layers (ectoderm, mesoderm, endoderm).

Roundworms (Nematodes) are triploblastic.

Explanation

On a DNA strand, nucleotides are linked together by phosphodiester bonds.

These bonds connect the 5' carbon of one nucleotide's sugar to the 3' carbon of the next nucleotide's sugar, forming a chain. 

Explanation

Meiosis II is the second division in the process of meiosis, which reduces the number of chromosomes in a cell by half.

If a cell starts with 42 chromosomes in telophase II, then each daughter cell will have 21 chromosomes

Because meiosis II divides the chromosomes into four haploid cells. 

Explanation

Genetic drift is the random fluctuation of allele frequencies in a population.

They are often due to chance events or sampling errors.

It can lead to the loss of alleles, especially in small populations, or the increase in frequency of rare alleles.

The effect of genetic drift is more pronounced in smaller populations

Random events can have a greater impact on allele frequencies. 

Explanation

 An anticodon is located on tRNA (transfer RNA).

The anticodon is a sequence of three nucleotides that recognizes and binds to a specific codon on mRNA during protein synthesis. 

Explanation

A palindromic sequence reads the same forwards and backwards.

Given the sequence "CTTAAG", the complementary palindromic sequence is "GAATTC". 

In DNA, A pairs with T and C pairs with G. 

When reading the complementary strand from 5' to 3', the sequence becomes "GAATTC", which is the same as the original sequence read from 5' to 3'. 

Explanation

The roundworm, also known as a nematode, is an invertebrate that possesses a pseudocoelom. 

Explanation

 Structures that have similar functions but evolved independently from different ancestral origins are called analogous structures.