Linked gene shows:
a) Always parental combination
b) Sometimes new combinations
c) Always new combination
d) New combination more

The correct answer is option 'B', which means that linked genes sometimes show new combinations.

Explanation:

Linked genes are genes that are located close to each other on the same chromosome. These genes tend to be inherited together, as they are less likely to undergo recombination during the process of meiosis.

When two genes are linked, they are usually inherited in the same combination as the parental generation. This is because they are physically close to each other on the chromosome and are less likely to be separated by the process of crossing over. This inheritance pattern is known as the parental combination.

However, there are cases where linked genes can show new combinations. This occurs due to a phenomenon called genetic recombination or crossing over. During crossing over, homologous chromosomes exchange genetic material, resulting in the shuffling of alleles between linked genes. This can lead to the formation of new combinations of alleles that were not present in the parental generation.

Key Points:
- Linked genes are genes located close to each other on the same chromosome.
- Linked genes tend to be inherited together, showing the parental combination.
- However, linked genes can sometimes undergo genetic recombination during crossing over.
- Genetic recombination can result in the formation of new combinations of alleles that were not present in the parental generation.

Conclusion:
In summary, linked genes usually show the parental combination, but they can sometimes exhibit new combinations due to genetic recombination during crossing over. This is why the correct answer is option 'B' - linked genes sometimes show new combinations.