The phrase "a difference in size" is grammatically correct and commonly used in written English.
It can be used to describe a variation or contrast between the sizes of two or more objects or things. Example: There was a noticeable difference in size between the small and large pumpkins in the patch.
This analysis shows that the "ancestral-type" members of both the PE and PPE families, and specifically the members present within the ESAT-6 (esx) gene cluster regions, have remained conserved between the two different strains (with the only reason for a difference in size being artificial, due to the use of an alternative start site during genome annotation).
His argument begins from the idea that there is a difference in size between the smallest size at which a given object is visible presumably from a given distance and the largest size at which it is invisible.
Such a difference in size might be related to the fact that Saint Kitts is larger than Nevis, in accordance with the trend that animals become larger on larger islands.
Analysis of morphometrical data from the known material of Noronhomys suggests that growth continued in adults the older the animal, the larger the depth of the mandible and the size of the lower incisor —and does not provide evidence for a difference in size between males and females.
Also, a difference in size of the predators is likely to affect their manoeuvrability and therefore their foraging capacity [45].
The RGA08 gene family thus likely evolved by mechanisms involving intragenic and intergenic unequal recombination, resulting in a difference in size and RGA08 gene content between haplotypes.
There are two possibilities either the difference can be explained by a difference in sizes and that the other planetary atmospheres have to be measured by indirect methods, or the Earth network is radically different (more than just the sizes).
Due to maternal differences in egg size investment, a difference in fry size was present prior to stocking, with fry from the mildly hybridized population being significantly larger than the similarly aged fry from the other three populations (Appendix S1).
Three closely related S. citri strains maintained in different hosts could have a difference in genome size up to 270 kb (Ye et al. 1996).
The sample size was calculated based on a difference in effect size of 30%, power of 80 %, 95 significance level, and coefficient of variation of 0.25.
This could be due to a difference in sample size, or to using different markers.
